Air to Water Heat Pump is a closed loop thermal device that draws heat from one place (called heat source) and rejects the drawn heat to another place (called heat sink). Unlike conventional air to air heat pump, where generated thermal energy is used to cool/heat air fluid, Air to Water Heat Pumps use generated thermal energy to cool/heat water or water/glycol fluid mixture. Our Monoblock Series Air to Water Heat Pumps can work at outdoor temperatures ranging between -25⁰C and +45⁰C.
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Air to Water Heat Pump can be used for various applications that require a Hot or Chilled Heat Transfer fluid. The most common applications are Hydronic Space Heating and Cooling, Domestic Hot Water Pre-Heating, SPA or Pool Heating (when used with Titanium Heat Exchangers) and Process Heating.
The most common typical installation is with 2 buffer tanks, a three way valve and a circulation pump dedicated for the air to water heat pump:
This configuration is the recommended one for optimising the performance of the heat pump. In the heating season, it allows the DHW heating tank and the space heating tank to be maintained each at a separate temperature (lower temperature for the space heating tank). This reduces the power consumption of the heat pump since its power draw decreases when its hot water supply temperature decreases. In the summer season, the above installation with 2 tanks allows the heat pump to produce chilled water for space cooling (Tank T-02) and DHW hot water (Tank T-01). The priority between the two tanks can be selected in the menu of the HP controller.
In projects where Operating Space Heatig temperature is close the DHW heating one and/or no cooling in the project, one buffer tank can be used:
In the above configuration, a buffer tank with indirect coil is needed. The indirect coil will be used to preheat DHW and the tank will be used for space heating and/or cooling. When Heat pump is in cooling mode, the indirect coil used to preheat DHW is bypassed by an ON/OFF 3 way valve (managed by the controller of the HP).
Controller of the Heat Pump is designed to manage evrything between the HP and the two tanks. This includes the 3 way valves, Circulation Pump, Backup heat and the temperature of the two tanks.
Heat Pump has an outdoor temperature sensor and it can be programmed to swtich between cooling and heating automatically based on outdoor temperature. It has also the possibility to be managed by a third party controller: It can be turned ON/OFF via port 7-8, Switched to Cooling via port 7-9 and switched to Heating via port 7-10.
Product Description
The EVI dc inverter heat pump can automatically adjust the compressor speed according to changes in the ambient temperature, while keeping the temperature more stable. Even if the set temperature is reached, the unit will not shut down and maintain low energy consumption operation. An EVI (Enhanced Vapor Injection) DC inverter heat pump is a cutting-edge heating and cooling system designed for high efficiency and superior performance in extreme climates. The EVI technology allows the heat pump to operate effectively even in very low temperatures, making it ideal for colder regions.
Our EVI Inverter is a solution which uses DC inverter technology to heat, cool and to produce domestic hot water. It does not only satisfy house heating requirements, but also supplies domestic hot water. Besides, it can provide you a cooler environment in a hot summer. You will enjoy a comfortable life at your home all year round with one device. It can operate in minimum outdoor air temperature of -25℃. Leaving water temperature up to 60C for radiator and domestic hot water applications, making hot water readily available.
The EVI technology improves the system's efficiency and capacity at low ambient temperatures, ensuring reliable heating even when temperatures drop significantly below freezing.The combination of EVI and DC inverter technology allows for precise control of the compressor speed, optimizing energy use and reducing operational costs.EVI DC inverter heat pumps can provide consistent heating and cooling across a wide range of outdoor temperatures, making them versatile and suitable for various climates.
The advanced technology used in EVI DC inverter heat pumps reduces wear and tear on the compressor, leading to a longer lifespan and reduced maintenance costs.An evi heat pump utilizes Enhanced Vapor Injection technology to boost heating efficiency, particularly in colder climates. This technology injects vapor into the compression process, which enhances the heating capacity and efficiency of the heat pump.
The EVI technology allows the heat pump to deliver higher heating outputs even at low ambient temperatures, ensuring warmth and comfort in harsh winter conditions.By improving the efficiency of the heating cycle, EVI heat pumps consume less energy, resulting in lower utility bills and reduced environmental impact.EVI heat pumps are designed to operate reliably in extreme weather conditions, providing consistent and dependable heating performance.
Combining the best of EVI and DC inverter technologies, the EVI DC inverter heat pump represents the pinnacle of efficiency, performance, and reliability in heating and cooling solutions. These systems are designed to deliver superior comfort, Energy savings, and environmental benefits, making them ideal for both residential and commercial applications. Whether facing extreme cold or seeking to reduce energy costs, EVI DC inverter heat pumps provide a versatile and dependable solution.
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Using EVI technology rotary compressor. Work stably in cold weather where the lowest temperature reaches -25°C.
Split design, to better avoid lag problems. Automatic antifreeze protection by detecting the water temperature of the system.
In order to save energy, when the temperature reaches the set value, it will automatically switch to low frequency operation mode.
Thanks to the DC inverter brushless fan, our split EVI DC inverter heat pump operates with sound insulation measures to ensure that you have an ultra-low noise device.
When the unit needs to be defrosted, high-frequency operation is adopted, which greatly shortens the defrosting time.
Detail:
● DC inverter technology
● R410A refrigerant
● SWEP plate heat exchanger
● ERP A++
● For heating, cooling and DHW
● Smart WiFi control
● Pre-set selection of the appropriate climate curve
● Low running noise
If you want to buy EVI DC inverter heat pump, please contact us and we will provide you with the most suitable price.
DC inverter technology creates a comfortable and energy-saving experience to heat and cool your home. This system controls compressor motor speed and regulates temperature at the same time to avoid any rapid fluctuations in temperature and energy usage. Compared to previous generation technology, this system has many innovative features that provide more energy efficiency and save you more money each month on your energy bills.
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The benefits including:
1. increased efficiency
2. rapid heating and cooling
3. quiet operation
4. reduced operating cost
5. reduced energy waste
EVI stands for "Enhanced Vapor Injection" and is a technology used on our cold climate heat pumps to achieve higher performance at lower temperatures. An EVI air to water heat pump uses a 3rd smaller internal plate heat exchanger called an "Economizer" within the refrigeration cycle. Using EVI air souce heat pump technology, we are able to overcome the limitation of maximum flow temperature that other cold climate heat exchangers encounter. EVI Heat Pump technology allows more heat to be delivered resulting in a better COP at much lower temperatures. The EVI technology increase performance efficiency by 27-30%.
The EVI DC inverter heat pumps are tested by TUV, achieving the ERP A++ energy class, the highest energy efficiency.
With smart WiFi APP control, you can check or control your heat pump anytime, anywhere easily.
There's pre-set selection of the appropriate climate curve for stable output capacity to match the heat load. The climate curve is the relationship between the heating system supply temperature and the outdoor air temperature. In the case of a climate curve, it is done automatically thanks to the weather-based control, which adjusts the supply temperature based on the outdoor temperature.
evi dc inverter heat pump, used for hot water and air conditioning, can automatically adjust the speed of the compressor according to changes in ambient temperature, so as to ensure that the indoor temperature is more stable. Even if the inverter reaches the set temperature, it will not stop running, but will keep running at low energy consumption. Therefore, in terms of service life and energy consumption, the evi dc inverter heat pump system is superior to ordinary air-water heat pumps, although its cost is higher.
The lower the ambient temperature, the higher the heating capacity of the evi dc inverter heat pump.
At minus 15°C, the heating capacity of evi dc inverter heat pump is about 60% higher than that of ordinary heat pumps. At minus 25°C, the gap expands to 80%. The variable frequency air source heat pump can change the fixed frequency of 50Hz to the operating frequency of 120Hz through the variable frequency controller. The compressor can be adjusted at any time according to the environment and the power supply frequency of the fan, and the speed of the compressor and the fan can be adjusted to achieve stepless speed regulation and make full use of energy.
The evi dc inverter heat pump can reduce the current when the system is started, and will not cause an impact on the power grid and the electric energy meter.
Can reduce the interference to other electrical appliances in the room. The voltage adaptation range is 340V-420V, which solves the problem of unstable work caused by unstable voltage. The wider the frequency range, the more reliable the operation can be guaranteed under continuous working conditions, and the more obvious the energy-saving advantage. The cooling (or heating) speed is fast, and the low temperature heating effect is good.
The inverter heat pump can achieve high power and high efficiency.
When the system is started, or when the ambient temperature is different from the set temperature, it can run at the highest frequency, up to 120 Hz. Start heating quickly, the temperature quickly rises or falls to the set temperature, and the temperature environment can be quickly obtained. When the temperature reaches the set value, it will automatically switch to low frequency operation, and the heating (cooling) effect is obvious.
In addition, in winter, due to the low ambient temperature, the inverter heat pump will frequently form frost, and the heat capacity of the air will be greatly reduced. The frequency conversion air source heat pump can defrost at high frequency, which greatly reduces the defrosting time and greatly improves the heat production.
Inverter air has good adaptability to ambient temperature and good low temperature performance. Through the stepless frequency conversion technology, there is no "attenuation" in the low temperature environment of -15 degrees, and the thermal performance is significantly better than the constant frequency low temperature air energy. High-efficiency, energy-saving, low-noise, and long-life air source heat pumps. The operating frequency of compressors and fans can be determined according to how much heat (cold capacity) is needed, so as to make rational use of energy. And since the compressor is not frequently turned on, the working state of the compressor is kept stable, so it does not consume too much electric energy. The energy efficiency of COP can reach more than 30% of the total energy consumption of fixed-frequency air, and it also plays a significant role in reducing noise and prolonging the service life of air energy.
The biggest advantage of evi dc inverter heat pump is energy saving. Heat pump heating is only 0.28 degrees per square meter per day, and air-conditioning heating only costs 0.14 yuan per day. Less square meters can save electricity by nearly 60% per day. Compared with gas wall-hung boilers, a 100-square-meter house requires 15 cubic meters of gas to ensure that the normal indoor temperature is above 20 degrees Fahrenheit a day. Calculated at 2 yuan per cubic meter, the daily cost is about 30 yuan, and the air source heat pump heating cost is less than 20 yuan, which is also very energy-saving. Compared with the heating cost of 6.5 yuan per square meter, air energy heat pump heating can save more than 90% of energy, and the advantages are more obvious.
When you run an ordinary air conditioner, the air conditioner will cycle between on and off states. It will open for a period of time, and when the house is sufficiently cooled down, it will close. As the air gradually recovers to match the outdoor temperature, the AC power is turned on again.
This is how air conditioners and heaters (including evi dc inverter heat pump) have been operating for years. However, it is actually not that effective. Imagine if you were driving a car that could only switch between 0% acceleration or 100% acceleration, and nothing in between. A 100% acceleration will definitely get you to the end of the block, but this is too much. Instead, you will gradually step your foot on the accelerator and give it only the necessary gas.
This is where the demand for Inverter technology emerges. The variable speed compressor driven by the frequency converter allows your heat pump to operate in the full range of 0 to 100%. It does this by analyzing the temperature and conditions in the home and then adjusting its output to maximize efficiency and comfort.
For fixed output units, the cycle between opening and closing and operating at maximum capacity not only stresses the evi dc inverter heat pump device, but also stresses the power supply network. Create a surge in each startup cycle. This can be reduced by using soft starts, but these soft starts are prone to failure after only a few years of operation.
As the fixed output heat pump circulates, the heat pump will absorb the current surge to start it. This puts the mechanical parts of the power supply and heat pump under pressure and cycled on/off multiple times a day to meet the heat loss requirements of the property.
On the other hand, the inverter unit uses a brushless DC compressor, and there is no real start-up spike during the start-up cycle. The heat pump starts with zero ampere starting current and continues construction until it reaches the capacity required to meet the needs of the building. This makes the evi dc inverter heat pump device and the power supply bear less pressure, and at the same time it is easier and more stable to control than the on/off device. Normally, when multiple start/stop units are connected to the grid, this may cause problems, and the grid provider may refuse to connect without a network upgrade.
The efficiency of evi dc inverter heat pump is much lower because they cannot control the energy output, but this is not the only cause of their inefficiency. They also put unnecessary pressure on the system.
A well-designed heat pump system will provide a coefficient of performance (CoP) between 3 and 5 (depending on whether it is ASHP or GSHP). For every 1 kilowatt of electrical energy used to power the heat pump, it will return 3-5 kilowatts of heat energy. The natural gas boiler will provide an average efficiency of approximately 90-95%. Compared with burning fossil fuels for heating, heat pumps will provide approximately 300% or more efficiency.
Take short-distance riding as an example. This is a problem when the air conditioner or furnace is turned on and off too frequently. Starting AC power from a complete stop state requires more energy than continuous operation of the system, and may even increase the additional wear of the system.
In other words, the fewer times your heat pump needs to be started, the better it is. Inverter's variable speed can help the system run more uniformly and efficiently, thereby reducing the number of cycles
Our evi dc inverter heat pump have high quality and cheap price. If you have any question on product, we will give the professional answers to your short questions.