NEWS

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NEWS

How much does the air energy heat pump water heater know?

PubDate:2017-10-11Author:Jinlun CompanySources:Mingdi Heat PumpViews:4096

1. Can the air source heat pump hot water (generator) unit be used when the ambient temperature is very low in the cold winter? How much can the water temperature be heated? What is the energy efficiency ratio?


According to the working principle of the air source heat pump water heater unit, the minimum evaporation temperature of the heat medium in the heat absorber can be reduced to below 30 ° C, and there are few areas where the ambient temperature is lower than it. However, when the temperature is too low, it is easy to freeze on the heat absorber to block the air passage, thereby reducing the heat transfer effect, and too small a temperature difference also reduces the absorption of air heat. The air heat pump hot water (electric unit) unit adopts an automatic intelligent defrost device, and the general manufacturer host can operate normally at an ambient temperature above -5 °C. Under such harsh weather conditions, the water temperature can still meet the requirements, and the energy efficiency ratio is not less than 2.7.


2. The air source heat pump hot water (heater) unit can't work well under the environment below -5 °C. Can it be considered that any area with sub-zero temperature can not be used?


     This cannot be said because the number of days in which most temperatures in China are below -5 °C is very small, even in most parts of the Yangtze River, where the temperature is below 0 °C for no more than one month, and more It is at night. Based on the above situation, the general manufacturer configures an electric auxiliary heating system in the air source heat pump hot water (heater) unit system. When the temperature is too low, the auxiliary heating system is automatically started to ensure sufficient hot water is provided. However, due to the short working hours, the cost will not be very high. In other words, the air heat pump water heater unit saves a lot of operating costs for customers for most of the year. And the high-end heat pump products on the market have already achieved -20 degrees of normal work.


3. Is the air source heat pump hot water (device) unit susceptible to damage?


The air source heat pump water heater unit itself has various protection facilities such as overload, overheating, phase loss, overpressure, and lack of snow protection, so there is no need to worry about its damage, its operation and the life of the whole machine. It is equivalent to air conditioning.


4. Is it easy to master the operation and maintenance of the air source heat pump hot water (machine) unit?


The air source heat pump hot water (heater) unit is relatively close to the air conditioner, so that the person who repairs the air conditioner can refer to the equipment manual for maintenance. Ordinary electricians can be employed as long as they are trained in air-conditioning technology. Of course, this is only for large-scale hot water units that are often adjusted according to the size of the unit, and household air heat pump hot water (unit) units do not have to worry about maintenance. Because it is fully automatic, and the condition is stable, no need to adjust frequently.


5. What is the design standard for the air source heat pump hot water system?


Generally speaking, the amount of hot water used in winter is the largest, and the amount of water produced by the air heat pump hot water unit in winter should be greater than or equal to the maximum hot water demand, so as the configuration standard of the hot water machine, and the operation of the hot water machine The time standard is: 8-18 hours of average work per day throughout the year.


6. What are the requirements for the installation personnel of the air source heat pump hot water (machine) unit?


Installation is very simple, the general plumber can only install according to the requirements of the drawings, but the installation and commissioning of the entire system requires the installation personnel to receive special training.


7. In what ways can the air-conditioning generated by the air source heat pump hot water (electric unit) be used?


(1) Delivering air-conditioning to the elevator engine room of the building

(2) conveying air-conditioning to the vents of the building

(3) Delivering cold air to the basement or storage room (Note: The above are recommended methods, and can be flexibly improved according to the site environment)

(4) In the specific unit, the fresh air ventilating unit can be replaced in public places such as halls, aisles and stairwells during working hours.


8. What is the investment return period for the air source heat pump hot water (machine) unit?


Although the equipment is more expensive than diesel boilers and electric hot water boilers, its operating cost is very low. Compared with the operating cost of electric hot water boilers, the investment can be recovered from 1 to 1.5 years. Generally, it needs 2 to 3 compared with diesel boilers. The investment can be recovered in one year.


9. How does the air source heat pump hot water system use the peak price difference?


Because the air source heat pump hot water system is generally designed as a heat storage type hot water system, the user can set the host heating start time through the control system. Most users in the electricity valley section and the flat section are just the low peak period of hot water use, air. The source heat pump hot water (heater) unit prepares the hot water in the low peak period when the user uses the hot water, and at this time, it is just the lowest flat price in the night. However, because the distance from the second day of the hot water peak is longer, the requirement is that the insulated water tank should be large and the insulation should be good. Specifically, you can consult the local government or the power department.


10. What are the characteristics of household heat pump water heaters?


Air energy heat pump hot water unit has a variety of models. It is a new type of central water heater designed for medium and high quality families with high efficiency, safety, environmental protection and superior performance. Its main features are:


(1) Pressure-bearing water tank design: water pressure is sufficient, and the pressure of hot and cold water is automatically balanced;

(2) Split design: installation is very convenient;

(3) Microcomputer control: fully automatic operation,

(4) Any combination of water tank hosts: to meet individual needs.


11, how to choose the water tank of household heat pump water heater?


The water tank of the heat pump water heater is determined according to the actual water consumption of the user in one day. Under the conditions acceptable to the user, it is recommended that the user select the water tank of the larger model. The average household: 1-2 persons, with 150-200L water tank (100L/person); - 4 persons with 200-300 water tanks (80L/person); 5-6 persons with 300-500 water tanks (70L/person).