Since the amount of water circulating in the loop is limited, it will reach the design temperature in a short time and the host will stop operating. Then, in a very short time, the water temperature will reach. The host boot condition, and the host will restart. Such frequent starts will significantly shorten the host lifespan and waste power. Since the host consumes the most power at startup, adding the buffer water tank is equivalent to an increase in system energy, the system temperature changes smoothly, the number of startup times is smooth. The host air source heat pump is naturally reduced and the service life is greatly extended.
Especially in rural coal-to-power projects, I always recommend that the buffer water tank be expanded appropriately, because the effect is quite obvious. It turned out that a thingIt had been installed in a rural area with a very small buffer water tank, around fifty liters, the result being an astonishing electricity consumption, up to fifty kilowatt hours per day.
Looking at the scene we noticed that as the wall was not insulated a fan coil had been used at the end. After the fan disk is turned on, the system cools down and the host boots. Because it is equipped with a 5p air source heat pump unit, as soon as it starts, the host will immediately reach the design temperature and immediately shut down. Such frequent starts lead to serious waste of electrical energy. Later, a 200 liter water tank was added, which can be started on average every hour, thus significantly reducing costs. The same goes for equipment we installed ourselves. In a residential building of 137 square meters, we installed a pumpe with aerothermal heat 5p as a test. After adding a tank of buffer water, it started almost every hour and a half. During last year's extremely cold weather, it consumed about 25 kilowatt hours of electricity per square meter.