Analysis of wall-hung boilers and central air conditioning matching edge
Guangzhou Devotion Group production of the famous Brand "Little Squirrel" wall-hung boilers with hot water in addition to providing health, the other unique features of its main sources of heat and by the end of three different composition of different heating systems, heating system, three models are: 1) and household Heat Pump Central air conditioning Component matching system; 2) and Radiator Composition of the supporting system; 3) and to warm Pipeline Composed of auxiliary systems. Currently on the market many users mistakenly believe that installing a central air conditioning, winter heating along with it is solved, otherwise, squirrels are on the wall-hung boilers and household type central air conditioning heat pump system for supporting the composition of the following analysis.
Case Study: An owner of residential: 160m2 Building Area, Sishierting 2 satellite, the resident population 4.
Against known, we use results from the winter heating, operating costs, initial Investment Three aspects
Analysis are as follows: 1) air conditioning and sanitary hot water
Program selection: Option One: With cooling capacity 20KW, 23KW heating capacity of the host of small air-cooled heat pump (input power: Host 7.8KW, Fans 0.45KW, pump 1.1KW, taken together 9.35KW). Auxiliary electric heating 8KW, public health a 10 liters Gas Water Heater , A main Guardian (Autran or Bibo'er) Water Heater Used for bathing.
Option Two: The same host, with "little squirrel" type model SD24 hung boiler (heat 23.7KW, pump power of 0.125W)
A) Comparison of Use: 1. Cooling effect?? Good; 2. Heating effect?? Option Two is better than program 1.
Air Pump host Standard The heating capacity is higher, 23KW, but this value is in the standard condition, outdoor +7 in cases of non-frost Test Data that when the temperature dropped to below 5 , especially while rain or high humidity conditions, the actual heat production will be reduced, when the outdoor temperature dropped to 0 ? 3 , the air conditioning heat capacity generally decreases by 75% , from the 23KW down 5.75KW, despite the heat plus electric auxiliary 8KW (5.75KW +8 KW = 13.75KW), this time, the indoor temperature can reach 12-14 . If Option 2, do not start the air conditioner, no external power auxiliary boiler heating capacity can reach 23.7KW, at this time, indoor temperature of 18-20 , unaffected by the environment. Therefore, the program is better than the second heating program for a.
3. Sanitary hot water?? Option II program than a
Water heater design flow based on temperature rise 25 , when the winter water temperature is low, the water heater is difficult to meet the demanding requirements bath, while the second scheme has sufficient water flow to ensure the greatest needs.
B) Comparison of operating costs in winter:
Standard parameters are: natural gas combustion value of 8500 kcal / standard cubic price provisional 2.2 yuan / standard
Cubic meters, electricity by residents Electricity Price of 0.56 yuan / kWh basis, the outdoor environment, the condition below 5 , operated for 10 hours a day.
Calculation method: Winter air conditioner operating cost = cost + electricity cost + electric heating gas consumption of auxiliary heat pump power consumption costs + cost + cost + health hot water fan coil power consumption of gas costs
Option One: Which: (1) master power air-conditioning costs: 7.8KW × 10t × 0.56 dollar = 43.68 yuan
(2) the cost of heating gas consumption: 0
(3) electric power auxiliary heating costs: 8KW × 10t × 0.56 yuan = 44.8 yuan
(4) cost of pump power: 1.1KW × 10t × 0.56 dollar = 6.16 yuan
(5) fan coil power consumption cost: 8 units × 0.055KW × 10t × 0.56 dollar = 2.5 yuan
(6) sanitary hot water consumption of gas costs: (100L × 4 persons × 4.18 × 25 × 0.239/8600Kcal/m3) ×
2.3 dollar = 2.67 yuan
Programs running costs of a day (1) + (2) + (3) + (4) + (5) + (6) = 99.81 yuan
Option Two: Which: (1) air conditioner power cost: 0
(2) heating gas consumption costs: 2.66m3 × 10t × 2.2 × 0.6 = 35.1
(3) the cost of electric-heating power: 0
(4) cost of pump power: 1.1KW × 10t × 0.56 dollar = 6.16 yuan
(5) fan coil power consumption cost: 8 units × 0.055KW × 10t × 0.56 dollar = 2.5 yuan
(6) sanitary hot water consumption of gas cost: 0 (wall-hung boilers, the output power as a heat source using a valid large margin,
Integrated the same time as the sanitary hot water heat, heating is only on the large side of billing, so 10 hours hot water consumption of gas costs to zero. )
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