How to Calculate the COP Value of Air Source Heat Pump Water Heater

COP value are very important index in many industries, in the middle of the air source heat pump water heater, represented by the heating coefficient of performance.Air source heat pump water heater in circulation work, the heating coefficient of performance COPh refers to in a certain condition, the compressor system with the same heat of the ratio of the compressor shaft power under the condition of PE.In simple terms, the COP is actually a heat pump system and the implementation of the heating and the ratio of the input power, under the same conditions, the ratio shows that the efficiency of the heat pump system, the higher the more the greater the energy saving.

The user wants to know the source of the COP value, can under standard conditions were calculated by formula.Air source heat pump water heater under standard conditions: temperature 25 degrees, the water temperature of 15 degrees.Water temperature from 15 degrees heat to 55 degrees, measured power consumption for W;Water temperature from 15 degrees heat to 55 degrees, the time required for t;Tank measured net capacity to remember L;Water heat gain as: Q=C*L*△T, average water heater heating capacity is: Q = Q/T, water heater of the average power consumption is: P = W/T, measured the COP for standard conditions: COP = q/P=C*L*△T/W.

In addition to the above way, consumers can also be concluded that COP value in the simple way, such as air source heat pump for heating system heat is P1 (KW) of the rated power of the heat pump is P2 (KW) then the COP = P1 / P2.Air source heat pump water heater of COP value not only receive the objective external environment influence, also will be affected by their own factors, such as the coefficient of performance of the compressor, heat pump system: (the so-called system match is to point to: compressor, condenser, evaporator, throttle body and the matching performance of automatic control system.)Obtained from the COP value is more than just air can water heater can effect comparing, can be roughly understanding to the matching performance between the internal parts.

Air Source Heat Pump Heating Floor Maintenance Points

1. Whether you need a local warming, air source heat add antifreeze?
Air source heat pump for heating floor can add a certain amount of antifreeze, project traders can according to the size of floor heating and the corresponding percentage of antifreeze.
In order to reduce the cost of the operation of the air can heat pump floor heating can try this way: when away from home during the day, can be used in a low temperature heating, raise the temperature in a timely manner after go home, enjoy a comfortable warm home life.

2. Air source heat pump heating floor stopped in winter and summer?
A, The area below 0 degrees in winter, could freeze period, if a short period of time (3-5 days) was not at home, can be machine stop, but must do not power;Air source heat pump floor heating unit now has its own antifreeze protection function, the function of automatic stop to prevent frostbite.
The correct antifreezing measures should be:
a) Short time (within a week) no person in the home, can be set to the lowest temperature, the domestic heat pump will run at the bottom temperature.
b) Home empty for a long time, but will all the water in the air source heat pump floor heating system drain and clean.But note that, before the operation, please give full consideration to indoor and other lines, such as water pipe will never freeze.
B, Need not when in the summer, long time no one in the home or for a long time not to use and not freezing can shut down the unit;Disconnect the power, put the water system of water to dry. But for security reasons, in the case of not live for a long time, must be on the water system after cut off power supply.  

3. When air source heat pump heating floor clean screen pack what to drain?
Air source heat pump heating floor heating water drainage method: close cold water inlet valve and open the water valve, open the sanitary hot water faucet, heating water discharge.Contrarian recharging water can run, can be turned on.

4.  Air source heat pump floor heating temperature couldn't get on?
a, The heat radiator is not enough, the problem easily happened in the replacement of the radiator user home.Add radiator big to small, the heat coming from the radiator is not enough to compensate for the heat loss of the room.
b, Wet room did not work, because the wall is wet, the water cut of gasification and to absorb a large amount of heat, therefore, room temperature curing barn takes about a week's time.
c, Starting and stopping, room temperature is not in balance, namely to turn it off;And heat coming from the early also because between families turn heat is absorbed by the outside world, so always can not meet the requirements of the temperature.

Ten Big Advantages Air source Heat Pump

1, Low operating cost, energy saving effect is prominent. Air source heat pump can save 70% energy compared with conventional products. With gas, electricity and electric auxiliary heating, compared to the solar water heater for the lowest cost, better than solar water heater (with auxiliary electrical heating), is 1/3 of gas water heaters, electric water heater around a quarter. Each power 1 kw can produce an average of 4 kw of heat energy, the same power consumption system, hot water about three times more than in the boiler.

2, Stable performance, is not affected by the environment. Air source heat pump all-weather running all the year round, and not night, cloudy, rain and snow, such as bad weather, can achieve full-year 365 days, 24 hours hot water.

3. Wide range of application. Air source heat pump in range of applicable temperature - 7 to 40 ℃, and all-weather use all the year round, cloudy, rain, snow and other inclement weather, and the impact of winter night, can be used normally. Continuous heating, compared with the traditional solar energy storage type, continuous heating, heat pump product can continuously heating water, meet the demand of user.

4, Safety performance is good, without any hidden trouble. Unlike electricity and gas water heater, air can heat pump by indirect heating mode exchange heat with water, no leakage, leakage safety hidden trouble.

5, Combination of multiple sets of installation to set up the central hot water system. Can turn more groups of the same type of heat pump units in parallel with, make sure the water heater for the whole body work, meet the requirement of hot water consumption peak, and provides the guarantee for a large number of with hot water. Hot water usage, can only use one group of heat pump unit and the other is shut, also can turn off when the maintenance of a set of heat pump units without affecting other continue to provide hot water heat pump units.

to be continued

Air Source Heat Pump Water Heater Low Temperature Solution

Set some of the heat pump water heater temperature reach or slow temperature rise, engineering unit operation for more than a lot of design time, still can not meet the set temperature, barely used, the measured temperature around 40 or more low, system circulating pump continuously circulation, temperature is not higher.

Cause analysis: the air source heat pump hot water unit of the water temperature generally set at 50 ℃ ~ 60 ℃, occasionally above 60 ℃ under 65 ℃ also fall within the scope allowed, only under the condition of operation may affect the service life of the unit.The rise of temperature must get heat from the outside world.Couldn't get on the water temperature of water in the two aspects, on the one hand, heat loss is greater or equal to the inflow of heat, when the two equal temperature constant.

Heat loss also includes two possibilities, one is the thermal insulation layer temperature difference is too big, not enough quality and nature heat loss is serious, especially the untight seal tank hole bad insulation or hidden insulation parts not ready, peripheral over heat preservation and the heat loss of the discontinuous will increase body heat preservation;Another kind of heat loss for hot water flow of cold water filling into at the same time.The heat loss is often appeared in the design scheme of water tank, some customer not intermittent water requirements for 24 hours, such as traffic large hotels, barber's city, such as customers, cold water rushed into the water tank, hot water use at any time.Once the weather suddenly cold, reduce unit from heat from the air exponentially, while customers to increase the amount of hot water, then keep the heat in the tank is not, is characterized by water temperature rise is difficult, or even cold water phenomenon.

On the other hand may be a host refrigerant and heat capacity difference, lead to valid for a single cycle with less heat exchange. One possibility is the refrigerant selection is not appropriate, air source heat pump hot water unit using refrigerant different from traditional air conditioning refrigerant, with specific physical and chemical stability, specific and is one of the core of the heat pump technology. Part of the heat pump products use the refrigerant on the market do not have this feature, in the case of ambient temperature to reduce appear weak phenomenon it is not surprising.

What’s the highest temperature of air source heat pump water heater?

"The highest temperature air source heat pump water heater can only up to 60 degrees?"A lot of consumers have such doubt, in fact, the air source heat pump water heater is the highest temperature can reach 80 degree obviously, but most of the air source heat pump water heater is the highest temperature is only 60 degrees, but the reason is that probably most people are sciolistic , now for everyone to explain in detail.

In common the air source water heater is only 60 degrees, the highest temperature scale, prevent water tank due to the safety of the unit, actually in the overseas advanced heat pump technology, air source water heater has already out of the water temperature reached 100 degrees, but in the domestic air source water heater’s temperature can reach 60-80 degrees, which is the most comfortable temperature, will reach 80 degrees.

Actually, Air source water heater’s temperature up to 80 degrees is the healthiest, with the effect of  high temperature sterilization, the water’s temperature up to 80 degrees can kill 98% of the microorganisms, say goodbye to the water pollution thoroughly, so that water is the safest. 45 to 60 degrees of water may be comfortable, but it is also the suitable temperature for some microbes, so the water temperature up to 80 degrees is the safest and healthiest.

The temperature of air source water heater up to 80 degrees is normal, Air source water heater can not install imported phosphorus silicon crystal, it can filter the impurity in the purified water to prevent the production of scale, for the unit safety, imported compressor and spare parts, also used the double heat detection technique, the empty vessel explosion proof design to prevent safety in the process of heating unit. And small volume, with four times the water yield of similar products.

So the air source water heater, water temperature of 60 degrees just technology breakthroughs, air can water heater water temperature of 80 degrees, just the healthiest.

Low Temperature Air Source Heat Pump Working Principle and Characteristics(2)

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The characteristics of low temperature air source heat pump

C.  Saving  

Due to the power consumption of other heating, heating and living hot water costs a quarter, which is equivalent to using the same amount of hot water or the same heating area, use the air to heat pump, only a quarter of the electric heating, heating bills.

D.  Green environmental protection

Water heater burning gas by burning combustible gas heating hot water, large amounts of carbon dioxide emissions at the same time, the harmful gas such as sulfur dioxide.Air source heat pump is only transfers heat from the surrounding air to the water, fully achieve zero emissions, almost does not affect to the environment, is the real environmental protection water heater.

E.  Low carbon fashion

In today's energy conservation and emissions reduction has become the trend of The Times, save energy and reduce carbon emissions is one of the most fashionable way of life.As mentioned earlier, air source heat pump is the reverse carnot principle, the energy is transferred to the water in the air, not directly use electric heating element to heat, so its energy efficiency can be up to 4 times of electric water heater, that is the same amount of hot water heating, power consumption is equivalent to a quarter of the electric water heater, greatly saves the consumption of electricity.