Air source water heaters and air source heating are the most common products in the application of air source heat pump technology, so what is the difference between the two? Air source heat pump water heaters are used to produce hot water directly; ​secondary use of heating”

What are the characteristics of air source water heaters and air source heating products?

First of all, let’s look at the air source water heater and the air source heating water heater. The purpose of the water heater is to meet the hot water for domestic use. Its working principle is to heat a box of water from the tap water temperature to a usable temperature (for example, 50 degrees). In the process of heating, the added heat is continuously stored in the water until the heat is accumulated until the water temperature can be used; this process can be called static heating. The characteristics of this static heating are:

①Before heating to the target temperature, the heat is accumulated in the water;

②After reaching the target temperature, the heating stops and the user starts to use it. For this reason, the water heater does not need to pay attention to the heating process, but only needs to pay attention to whether the heating target temperature is reached. Therefore, the air energy water heater should prioritize the pursuit of elevated temperature over the pursuit of efficiency.


The purpose of air energy heat pump heating is to meet the needs of room heating and maintain the room at a certain temperature. The characteristics of this heating are:

①The heating is continuous and uninterrupted, and the room also consumes heat while heating;

②The size of the input heat should be adapted to the heat consumed by the room. Since the heat consumption of the room changes continuously with the season, climate, time, usage habits, building characteristics, etc., the most basic features of the heating heat pump are: load regulation capability and energy efficiency ratio, with the use of large-area low-temperature radiators, The temperature of the water supply is not the main goal of the heating heat pump.

Compared with the demand for hot water, the demand for heating requires additional heat and the operation time is longer. Taking a family as an example, the heat consumed by hot water is only about 3% of the heat consumed by heating. The energy efficiency ratio is elevated, the energy saving effect and economic benefit are more significant, and it is easier to recover the investment through energy saving.

This is the difference in the characteristics of use, which creates different design concepts and design requirements of the two products. Therefore, broadly speaking, these two heat pumps should not be used in confusion. Even if it seems to work on the surface, the effect must not be the best. of. Therefore, the design conditions of the two are somewhat different. Air source water heaters focus on the index design of standard hot water working conditions. Air source heat pump heating must meet the index design of standard working conditions, and at the same time, it needs to meet the requirements of actual user heating working conditions in the design index, and needs to take into account all working conditions. Under the assessment of the coefficient of performance.