What Kind of Refrigerant Do Heat Pumps Employ

In the past, Freon was widely used for heat pump systems. At first, Refrigerant R22 occupied the market. But with the awareness of its harm to the ozonosphere, besides raising the COP of heat pumps, scientists strive to develop new working medium to replace Freon.

Nowadays, R410A and R407C are the most popular environmentally-friendly refrigerants.

The working pressure of R410A is 1.6 times as high as that of R22. It has steady and non-toxic performance. Free from chlorine, R410A does no harm to the ozonosphere. It is accepted by the American and European countries.

R407C can work in the system of R22, but some components and lubrication oil have to be changed. When filling the system, we must use liquid R407C for its performance is not so steady. 

We are on Google blogger http://heatpumpswotech.blogspot.com/.Welcome to learn more about our products on www.ecowotech.com.

Heat Pump Testing Area

Customer visit in the testing area for checking each product with 30 mins for heating and 30 for cooling. Certain water flow and target temperature is set for checking if the heat pumps are designed according to customers' requirement. 

Wotech Heat Pump Peak Season

Wotech Heat Pump enters its peak season. The warehouse is fulfilled and the heat pumps have to be placed in the busy workshops. Hot water heat pumps are mostly welcomed.
Heat Pumps ready for loading.

Visit us on www.ecowotech.com to choose a heat pump for your winter!

Wotech Heat Pump Birthday Party

Wotech Heat Pump, a warm place for everyone. Not only it produces heat, but also warmth to its employee. On its stage, everyone can freely shows his talent, with happiness and thankfulness to this harmonious family. Happy Birthday to the dearest members!

Want to join this warm family? Welcome to visit us at www.ecowotech.com.

How to Value the Performance of a Heat Pump?

Performance of heat pumps is valued usually by Coefficient of Performance (COP for short). COP stands for the amount of heat transferred to the high-temperature objects from the low-temperature ones divided by the motive power amount needed. Generally COP stays between 3 and 4, which means heat pumps can transfer heat three or four times higher than what it consumes to the high-temperature objects. So heat pumps are in fact a heat elevator. They consume very little electricity when working but they can absorb heat four to seven times higher than electricity from the environmental medium such as water, air and soil. It is one of their environmentally-friendly point for they elevate the temperature and use it.

We are on Google blogger http://heatpumpswotech.blogspot.com/.Welcome to learn more about our products on www.ecowotech.com.

How Does a Heat Pump Work

It is known to all that like water flows towards the lower level, heat is transferred to the lower-temperature object from the one of higher temperature. But actually faced with the energy deficiency, we design to collect the low-temperature heat in nature such as from the air and from the river water. Heat pumps make use of such heat for water and air heating.

Heat pumps work similar as what an air conditioner does. Generally, a cooling system (with a compressor) is made of four main parts: compressor, condenser, throttling valve and evaporator. The liquid refrigerant with low temperature and low pressure absorbs heat collected by the evaporator and then becomes low-pressure gas. Then it is pressed into high-temperature and high-pressure gas in the compressor. It passes its own heat to the cold water and turns into liquid with high temperature. Moving through the throttling components (capillary tubes, thermostatic expansion valve and electronic expansion valve), refrigerant becomes low-temperature and low-pressure. This a whole cooling cycle.

We are on Google blogger http://heatpumpswotech.blogspot.com/. Also welcome to learn more about our products on www.ecowotech.com.

Heat Pump Peak Season in Wotech

Wotech Heat Pump enters its peak season. Every day, trucks come in and go out with loads of products.
As the winter is coming, a heat pump will keep your house warm and comfortable. The strong compressor, 4-way valve and high efficiency heat exchanger makes Wotech Heat Pump works well under low ambient temperature. With Wotech heat pump, an eco-friendly and cozy winter is waiting for you.
For more about us, welcome to visit www.ecowotech.com.

Wotech Hot Water Heat Pump WBC-A Series

Wotech Hot Water Heat Pump WBC-A Series. Special dual-color design. Hot water temp. up to 60℃, suitable for underfloor heating and radiator heating. EE valve for high efficiency in different ambient temp. R410A system available. Welcome to visit www.ecowotech.com.

Industrial Drying Heat Pump

Industrial heat pump for tobacco drying, food processing, chemical dehumidifying, etc. One heat pump for 80℃ hot water and chilled water in separated tanks, energy-saving. Drying in the airtight cabinet helps maintaining the flavor of materials.The system has stable dehumidifying performance without influence from outside air. Heat is fully used by the heat pump, no waste heat discharged.
 For more about our products pls visit www.ecowotech.com.

Customer Visit to Wotech Heat Pump Sub-company

Customer visit to Wotech Heat Pump sub-company, Huayue. Huayue produces titanium heat exchangers and tube-in-shell heat exchangers. Below is in the titanium coil leakage check section. Each customer visiting our factories is satisfied with our quality control.

For more pls visit www.ecowotech.com.

LED Controller Display of Wotech Heat Pump

For Wotech Heat Pump, we have LED, LCD and colorful controller display for options.
Welcome to visit www.ecowotech.com for more details.

Wotech Heat Pump in German Chillventa Exhibition

Wotech Heat Pump is now in the German Chillventa Exhibion. Welcome to visit us at Hall 7 Booth No. 7-738 to know more about us. We will introduce to you our company, our air source heat pump and our service to you in detail.

Also many welcomes for your visit to our website www.ecowotech.com.

Second Start-up of Heat Pump

Before delivery, we randomly check one piece of heat pump of the same model of the same order. From inner structure to outer packing, we check if everything meets the requirement. The technicians, QC inspectors, and manufacturing director jointly check to make sure all is fine.
For more about us pls click www.ecowotech.com.

Another Heat Pump Exclusive Shop in Lingshan City

Many congrats to Wotech Heat Pump exclusive shop in Lingshan City. What a lively scene. The air source products are believed to improve environment and living condition there.
For more pls visit www.ecowotech.com.

Heat Pump PCB Board under Testing

Heat Pump PCB Board under Testing

PCB board under testing before production. Each PCB is connected to electrcity fluctuation from 177V to 264V for 72 hours. The one with poor quality will be sent back to the supplier. We treat each main component the same. We believe only few Chinese heat pump manufacturer 100% inspects main components. For more about our products pls visit www.ecowotech.com.

Wotech Heat Pump for Hotel Project

Wotech Heat Pump for Hotel Project

Congrats! Wotech heat pumps are applied to the hotel project in Sichuan. Three 10P low temperature heat pumps for 500㎡ underfloor heating, working down to -25℃.

For more about our products pls visit www.ecowotech.com.

Titanium Heat Exchangers for Swimming Pool Heat Pump

Titanium Heat Exchangers for Swimming Pool Heat Pump

All the heat exchangers are produced by our sub-company. We used to purchase from some suppliers but found the titanium was not pure enough. Now we produce them in our sub-company. Quality is further ensured.

PVC shell can stand high water pressure. The high-pure titanium tube is against corrosion from the chloride within the pool water. There is ample space for water to flow between titanium coil and PVC shell, reducing flow resistance.

Tube-in-Shell Heat Exchangers for Air Source Heat Pumps

Tube-in-Shell Heat Exchangers for Air Source Heat Pumps

The tube-in-shell heat exchangers are produced by our sub-company. Carbon steel shell and copper tube is against corrosion. Water runs inside the copper tube and refrigerant passes between the copper tube and the carbon steel shell. Heat exchange is complete.
Before production, 6 bar water is charged for leakage check. For any leakaging pieces we send them back to our sub-company and check out the problem.

For more about our products pls visit www.ecowotech.com.

Wotech Heat Pump Promotion in Chinese Cities

The National Day holiday is a good chance for heat pump promotion. Air source heat pump, as a kind of eco-friendly product, contributes to energy-saving and environment-protection cause. We drove our promotion car to each corner of the cities, making our products known by more consumers. For more pls visit www.ecowotech.com