Доска объявлений

tfhjj714

• Создано: 11-07-22
• Последний вход: 11-07-22

×

Контакты

Имя

Электронная почта

Сообщение

Код

Отправить сообщение

xingang-wood.com

Описание: xingang-wood.com    Today in the market we can find different classes or types of wooden boards, whether solid or composite. All of them with very different properties and prices. For those who are not used to working with them, the decision can be complex, or worse, very simple when identifying everyone as similar, which would lead us to an error. Each type of plate was manufactured with a number of uses in mind. Some are more resistant to knocks, others to twist, to water, some are designed to support decorative elements, etc. Types of wooden boards   We can classify them according to several criteria. According to the material and manufacturing process or according to the finish or coating they receive. Don’t forget that the combination is common. FIBERBOARD, DM OR MDF  For this type of cardboard, small wood fibers are used, less than those used for agglomerates, which are pressed and glued. During the industrial manufacturing process, chemical components are also often added to improve the properties of the board. More often, water repellent plates, of greater water resistance, and fire retardant, fire retardant. They can be found raw and with layers of melamine(like melamine MDF), so their uses are similar to those of chipboard. However, a differential to highlight is that they are an excellent support for the application of finishes (varnishes, enamels, lacquers …), since their texture, besides being smoother, allows sanding. Although these fiber boards are known as MDF or DM (medium density), these acronyms only refer to an approximate density of the ordinary MDF of 650-700 kg / m3. If the density is higher, the logic is to talk about HDF (high density fiberboard), and if less, low density.   PLYWOOD BOARD  Plywood boards are formed by stacking wood veneers, with opposite orientations to improve strength and stability, and applying glues for fixing them. This type of board has great resistance and depending on the treatment applied it can even be used in contact with water, so it is also known in some places as marine veneer, marine board. This possible resistance to moisture is due to the use of phenolic glues, so we speak of phenolic plywood. There are some different types of plywood, such as film faced plywood, commercial plywood, melamine plywood, fancy plywood, grooved plywood, PVC plywood, etc. In some cases, the outer leaves are made of noble or precious woods. The reason is that these wooden panels will be used for decorative and not just structural purposes. Melamine plywood for decorative purposes is also common.

Дата Публикации: 11-07-22

jinhaocooler.com

Описание:  jinhaocooler.com Air-cooled evaporators are special heat exchangers for cooling the air mass in chillers or cold rooms. They differ in power, construction, and use of refrigerants. Even the capacity of the same model can vary depending on the boiling point of the refrigerant and the boiling delta (the difference between the boiling point and the temperature in the refrigerating chamber), the used refrigerant, the speed of the fans. There are different types of evaporators, like cooler evaporator and shell and tube type evaporator. Therefore, before you buy air-cooled chillers, you need to consider the operating conditions. Commercial and industrial refrigeration evaporators are differentiated depending on the capacity and the application area. They have a relatively small capacity (up to 10-15 kW) and are used in small and medium-sized applications. And here the condenser must to be mentioned. The AC condenser units are among the main parts of cooling AC systems. It is the outside unit that usually sits on a roof or in a yard. Many issues may affect how an AC condenser works, with all of these problems affecting how the AC system functions. What Is An Aircon Condenser? An AC condenser or condenser is an outdoor part of a heat pump or air conditioner that collects or releases heat (depending on the time of the year). Both the heat pump and split-air conditioner condensers feature the same main or basic parts. The condenser cabinet houses a compressor, condenser coil, a fan, and various controls. The condenser coils are either made of all-aluminium tubing, which allows for rapid heat transference, or copper tubing. Also, condensers can be devided into different types like water cooled condenser, air cooled condenser, condensing unit, Water Cooled Condensing Unit, air cooled condensing unit, etc. What Role Does An Aircon Condenser Perform? The condenser in an AC system receives high-pressure gas from a compressor, converting the gas into a liquid. This is made possible by heat transfer, which relies on a principle whereby heat will move from warmer to cooler substances. When the refrigerant starts flowing through a condenser, the fins in the condenser allow heat transference to the “surrounding air”. The condenser also features a fan over the top that makes sure the heated air is cooled off quickly, enabling these processes to continue. Once the refrigerant temperature drops below its “saturation temperature”, it will turn back into a liquid. However, it needs to work with other refrigeration spare parts as well. 

Дата Публикации: 11-07-22

hptchina.com

Описание: hptchina.com  If you have ever driven through a toll booth or checkpoint, you have probably passed through a boom gate. This kind of automatic barrier is the usual method for controlling the flow of traffic into a restricted area. To understand these traffic barriers better, let's take a look at their nature, functions and typical usage. What Is a Barrier Gate? Barrier gates, also known as automatic rising arm barriers, are one of the most simple yet effective varieties of automated barriers. A boom gate consists of a long arm that lowers automatically to block the path of oncoming vehicles. To raise the arm, drivers must present a pass, enter a code, pay a toll, or wait until the system recognizes that it is safe for them to proceed. Typically, an electric motor raises and lowers the arm, while a sensor or security access system controls the operation of the motor. >Where Are Automatic Barriers Used?  Automatic barriers have many applications. For example, they are often found at parking facilities where drivers must pay a fee to park their car. When drivers want to leave the car park, they must present a receipt showing proof of payment to get the barrier to rise. For different applications, there are different types of gates, such as flap barrier gate, swing barrier gate, speed gate, etc.  Other applications of barrier gates include toll booths, where drivers must pay the toll before the barrier will rise to let them through. Automatic barriers are also in place at many checkpoints and at the entrances of restricted areas. Here, drivers may have to show ID, tap an access fob against a sensing plate, or swipe an access card to be allowed entry.  Except for barriers, there are another gate widely used for entrance. It is turnstile. A turnstile is a gate that controls or monitors pedestrian traffic flow. This important physical structure has a variety of safety and security applications, and is found in industries ranging from transport and energy to hospitality and financial services. At its most basic, a turnstile is simply a gate that manages pedestrian traffic flow by allowing the single-file passage of people in one or two directions. However, many turnstiles boast more advanced features that enable them to integrate with other access control systems to increase security while controlling people flow. For example, turnstiles can accommodate a range of credential readers, including keypads, card readers and biometric readers. They can also integrate with people counting systems to monitor pedestrian traffic flow. There are several types of turnstile, inclding tripod turnstile, wide lane turnstile, full height turnstile, vertical tripod turnstile and so on, each suited to a particular application. Waist-high turnstiles are among the most popular types of turnstiles. They consist of a three-arm barrier positioned at waist height that rotates to allow pedestrian traffic flow. These highly durable turnstiles are best suited to locations that have high levels of pedestrian traffic. Other types of turnstiles include optical turnstiles, which create passage lanes, and full-height turnstiles, which act like revolving doors. Optical turnstiles are suitable for locations where entry speed, aesthetics and handicap access are important, while full-height turnstiles are ideal for areas that require maximum security.

Дата Публикации: 11-07-22

hochiot.com

Описание:  hochiot.com Circuit Breaker Access to electricity has become an entirely necessary and pivotal part of keeping up and operating within any modern commercial or industrial business or even just performing day-to-day tasks in a home. Despite this point, however, electricity is inherently quite volatile, and so it must be precisely contained and planned for, and potential risks have to be mitigated. Many devices have been created to perform the function of electrical safety, the most popular and common of which is a circuit breaker. What Is the Function of a Circuit Breaker? In its simplest form, a smart circuit breaker is an automatic circuit protection system. Breakers are installed in an electrical panel (breaker box) and each circuit is attached to a singular breaker. The breaker will monitor the circuit and in the event of a complication such as an overload, the breaker will immediately shut off that circuit. This is often colloquially called a "breaker trip" or "tripping a breaker" and it commonly happens when appliances or equipment acts up or too many high-power draw tools are placed (plugged into) a single circuit. Think about a home outlet with a space heater, a television, and a vacuum all plugged into it. This would almost certainly cause a breaker trip, which will shut off access and operation of that circuit until the problem is fixed and the breaker is reset and placed back into position. There are many types of circuit breakers such as Ewelink WIFI Circuit Breaker, Tuya WIFI Circuit Breaker, RS485 Circuit Breaker, Remote Control Circuit Breaker, Zigbee Circuit Breaker, Automatic Recloser Circuit Breaker, etc. Another widely used equipment is smart relay. Look around you. Smart relays are everywhere! You can find them in lighting controls, ice-making machines, grocery store mist systems, and more. And there's a good reason: They meet all safety requirements, while at the same time saving you time and money. What is a smart relay? The smart relay is a small-scale PLC designed for use in industrial environments. It is also called mini PLC or logic relay in the electrical market. This intelligent logic module is the ideal controller for simple automation tasks. There may not be a need for too many inputs and outputs in a machine or an electrical panel. Simple operations can also be performed by programming smart relays. The PLC measures and evaluates the events, changes, and movements in the field with various measuring devices. It then interprets it in itself and transfers it to other devices that it commands in the field. Collection and transfer of information can be done analog or digitally. For example, data from the sensor can be transferred to a valve. PLCs should be preferred if the system to be controlled is larger and requires more operations. It can also be devided into many types like Ewelink Smart Relay, Tuya Smart Relay and so on for different models. 

Дата Публикации: 11-07-22

chinaturbokits.com

Описание: chinaturbokits.com  A significant difference between a turbocharged diesel engine and a traditional naturally aspirated gasoline engine is the air entering a diesel engine is compressed before the fuel is injected. This is where the turbocharger is critical to the power output and efficiency of the diesel engine.  It is the job of the turbocharger to compress more air flowing into the engine’s cylinder. When air is compressed the oxygen molecules are packed closer together. This increase in air means that more fuel can be added for the same size naturally aspirated engine. This then generates increased mechanical power and overall efficiency improvement of the combustion process. Therefore, the engine size can be reduced for a turbocharged engine leading to better packaging, weight saving benefits and overall improved fuel economy. How Does a Turbocharger Work?  A turbocharger is made up of two main sections: the turbine and the compressor. The turbine consists of the turbine wheel and the turbine housing. It is the job of the turbine housing to guide the exhaust gas into the turbine wheel. The energy from the exhaust gas turns the turbine wheel, and the gas then exits the turbine housing through an exhaust outlet area. The compressor also consists of two parts: the compressor wheel and the compressor housing. The compressor’s mode of action is opposite that of the turbine. The compressor wheel is attached to the turbine by a forged steel shaft, and as the turbine turns the compressor wheel, the high-velocity spinning draws in air and compresses it. The compressor housing then converts the high-velocity, low-pressure air stream into a high-pressure, low-velocity air stream through a process called diffusion. The compressed air is pushed into the engine, allowing the engine to burn more fuel to produce more power. Applications of Turbocharger A turbocharger is commonly used in automotive engines like truck, car, train, aircraft, and construction equipment. modern release of Otto cycle and diesel cycle internal combustion engines feature turbochargers.   Let dive in to explain some applications of turbochargers: Gasoline and Diesel-power cars: Turbocharged cars is common of petrol and diesel-powered cars to increase their power output for a given capacity. It also increases fuel efficiency, allowing a smaller displacement engine. These engines lost weight of about 10% and save up to 30% in fuel consumption and still deliver the same peak horsepower.   The first turbocharged passenger car was the Oldsmobile Jetfire option. It uses the component to a 215 cu in all aluminium V8 and on Chevrolet product called corvairs. It is initially called Monza Spyder cooled flat six-cylinder engine. Diesel cars vastly rely on turbocharger since the use of improved efficiency, drivability, and performance of diesel engines. It is produced on passenger car was Garrett-turbocharged Mercedes introduced in 1978.  Turbocharger are slightly different for different models, for example, there are Turbocharger for Audi, Turbocharger for Seat, Turbocharger for Skoda, Turbocharger for Volkswagen, Turbocharger for BMW, Turbocharger for Mercedes-Benz, Turbocharger for Toyota, Turbocharger for Volvo, Turbocharger for Hyundai, etc.  Trucks: For the same benefit, diesel truck engines have featured turbocharging since 1938. Aircraft: Over the year the effect of turbocharger also increases the efficiency of aeroplanes.

Дата Публикации: 11-07-22

chinaflasks.com

Описание: chinaflasks.com    Nowadays, a vacuum flask has become our reliable companion at work, going out for exercise or travel as it retains our favorite drink's taste and temperature for extended hours. The secret lies with the vacuum flask parts and functions. Several parts of a vacuum thermos flask such as the screw-on stopper, vacuum, the refill, etc, each part has its own function. Screw-on stopper This part of the vacuum bottle is normally made from silicone, which fully covers the mouth of the vacuum flask to lock the heat inside. To avoid the heat escape from the bottle when opening the gasket, several screw-on stoppers are created with a press button. Once pressed, it will open a small space enough to pour out the water, the user will not need to twist open the stopper.  Manufacturers have spent a lot of time in the design of the stainless steel vacuum flask's outer case in order to make it eye-catching. Artworks to decorate the case may come from cartoon characters to serve kids and teenagers, while a minimalist design that creates a sporty feeling matches well with adult users' taste. The refill: silver-coated glass or double-wall stainless steel The flask refill is made of two-layer glass or stainless steel, with a vacuum layer in between the inner and the outer layers.   In comparison, stainless steel makes the flask lighter and smaller than that using glass refill, while the glass refill keeps the heat longer and retains the drink taste better thanks to its coated reflective metal layer. However, the glass refill is fragile, it can be broken if dropped from 10 centimeters (4 inches) high, while the stainless steel refill is tough and easy to bring along when traveling.   A vacuum for the stainless steel vacuum bottle between the layers of the glass/stainless steel refill helps prevent heat conduction and radiation. Since vacuum does not conduct heat, the temperature of the beverage in storage is retained for a long time. Vacuum is the most important part of a flask. Normally, three pads are placed between the two inner jars to fix the refill position. Looking from outside of the vacuum pot, we can see three black points around the bottom, but they don't directly contact the liquid, therefore they cause no harm to the user's health.   The flask base is often made of TPE plastic to keep the flask stand stable and insulate well with the table surface.  By this point, we've discovered the secret behind all of the vacuum flask parts and functions. And it also has applications, for example, it can be used as stainless steel cola bottle, stainless steel vacuum space pot, stainless steel vacuum travel pot, vacuum stainless sport bottle, etc.

Дата Публикации: 11-07-22

besllinsanitary.com

Описание:  besllinsanitary.com Bathrooms need to have faucets for a decent functioning. There are lots of kinds of faucets available in many styles, colors, shapes. All the faucets can be grouped in four categories as per their working mechanisms. They can be grouped in following categories: Cartridge, Compression, Ball and Disc. These are in fact parts of faucets that control the water flow from them. Three of these faucets are mixing faucets while the fourth is not. The compression faucet as the kitchen faucet has two controls: Hot and Cold. Compression bathroom faucets have washers or seals that close against a valve seat to restrict water flow through the faucet body. This control is turned off when you turn the handle off. The other three types don't use washers for the off-and-on action, though they do have O-rings and neoprene seals to prevent leaking. They're referred to as "washerless." Because washers and seals wear out with use-resulting in the familiar drip, drip-washerless faucets are generally favored. The fasces you purchase must be synchronized with the architecture of your bathroom. Some faucets will remind you of old fashioned pumps while others will be quite modern. The two handled faucets are more stylish then single handle ones. Single-handle faucets are more practical then two handled ones. When you buy faucet, keep in mind the spout's height and reach also. You need to choose the sink and this choice will affect your other purchases. The spout should be long enough to reach into a sink's multiple basins and high enough to provide ample working room. Buy high arch or gooseneck spouts if you have large pots and shallower sinks. They will not suit a compact kitchen setting. Pullout sprayhead spouts have grown to be quite popular, but look for a retractable double-interlock hose that won't kink. Just like the faucets, the shower head has the similar functions. And they are all essential parts for shower system or shower set. Are you looking for ways to improve your shower experience by upgrading the shower head? There are a lot of attractive options out there. Here, you'll learn about the different types of shower heads. Most of the products discussed here can be installed easily and can dramatically change the quality of your shower as long as you pick the one that suits you best. Before we get started, let's start with the basics, the shower head is the piece that the water comes out of when you turn on the shower. Shower faucets are the shower head plus the valve that controls the flow of water and its temperature. Depending on the proportions of your shower or bath and your ceiling height, your options will vary. Overhead mounting is generally preferable for the true rainshower experience. If an overhead mount is not available due to a low ceiling, you can still get the rainshower experience as long as you are not too tall to stand comfortably under a wall-mounted shower head. Single function and multi-function rain shower heads are available. Single function models may be best with an overhead mount if the fixture is water pressure,,, beyond your reach. A multi-function rain shower head will usually include both a top rain shower head element along with a hand-held faucet. That way you get the best of both worlds! However, do keep in mind that the water pressure will diminish a bit with a larger shower head and multiple nozzles. If water pressure is something you need for a good shower experience be sure to discuss this with your remodeler about options for pressurizing your water system. If your dream is to have a multiple shower head/nozzle shower, make sure to run multiple water lines to the bathroom so that each can function properly. There are many different types of shower head like filtered shower head, overhead shower, multi function shower head, rain shower head, etc. 

Дата Публикации: 11-07-22