Analysis of Operation Effectiveness
The project was installed and commissioned on June 2. The initial water temperature after filling up the water tank at 6:00 am on June 3 was 20.5 degrees. At 17:30 p.m., only 400 solar vacuum tubes were used. The temperature of 4 tons of water tank had reached above 75 degrees. There were 50 pigs. The power consumption of the whole system was only about 45 degrees, and the main power consumption equipment was to keep constant temperature. Compared with the previous coal-fired boiler, the steam generator saves half of the cost. The effect is very good and the users are satisfied.
According to user feedback, the project has been running for nearly a month. When the weather is clear, solar heating can reach 90 C, which fully meets the water demand. On cloudy and rainy days, air energy equipment runs for about 2 hours and consumes less than 18 kilowatt-hour electricity. At present, the amount of pig slaughter is not large, only more than 30 pigs a day. The running time of the electric steam generator is about one and a half hours, and the energy consumption is 45 kilowatt-hour. According to the electricity price of 0.75 yuan per kilowatt hour, the daily operating cost will not exceed 50 yuan at most.
Customer Evaluation
From the current operation situation, the effect of the transformation is very good, the cost is half less than that of the original coal-fired boiler. Even in winter, the daily operation cost is estimated to be about 100 yuan, which saves a lot of money compared with the original methanol steam furnace.
Customer Mr. Liu said: "Air source heat pumps are really energy-saving. When the temperature is low in winter, they may run a little longer. They are set to run from 6:00 p.m. to 3:00 a.m. on the next day, with a maximum of 10 hours. There are no problems during the operation, and the operation is very simple. The staff will use it. If there are any problems, they can contact the engineer or salesman. The only worry is that in winter, when the temperature is low, the slaughter of pigs will increase, and the water temperature of the high temperature pool will drop rapidly. If the electric steam generator is not enough, an additional 36 KW electric steam boiler will be considered. The slaughtering cost of each pig is now between 1.5 and 1.7 yuan, and it should be between 2.5 yuan and 3 yuan in winter