As we know that the simplest way to build heating system for hot water for dormitory is adopting boiler with coal burning ,which will cause CO2 increase for the earth. Here is the good example how to design the heating system with energy saving heat pumps to protect the environment.
The project is the central air conditioning project and hot water project of a pharmaceutical factory dormitory building, canteen. The dormitory building has a total air conditioning area of 5700 square meters, 200 people and the canteen area of 1044 square meters. In the original design institute scheme, 14 air source heat pump units are used in the dormitory building, 4 air source heat pump units are used in the canteen, and the machine rooms are located on the roof of each building. Our company has optimized the system design:
(1) The dormitory building and canteen are combined into one system
(2) The system adopts air source multi-functional unit.
Project requirements
Name |
Area |
Air conditioning cooling load |
Air conditioning heat load |
Hot water load |
Dormitory building |
5700m2 |
615kw |
308kw |
800kw |
canteen |
1044m2 |
185kw |
96kw |
\ |
Project design
1. Cold and heat source design
Project configuration
Equipment name |
Cooling capacity |
Power |
Heating capacity |
Power |
Heat recovery |
quantity |
remark |
Air source multifunctional machine |
307kw |
90kw |
326kw |
85kw |
123kw |
2unit |
|
Benefit analysis
(1) The air source multi-functional unit is adopted for the combination of the system, and the initial investment cost can be reduced by 25% ~ 30% 。
Fuel mode |
Fuel unit price |
Theoretical calorific value |
Comprehensive utilization rate |
Hot water cost(RMB/T) |
Maintenance cost(Ten thousand/yuan |
Diesel boiler |
6yuan/kg |
10200kcal/kg |
85% |
27.6 |
6 |
Natural gas boiler |
3.5yuan/m3 |
8600kcal/m3 |
75% |
21.7 |
8 |
LPG boiler |
5yuan/kg |
10800kcal/kg |
70% |
26.5 |
7 |
Electric hot water boiler |
1yuan/kwh |
860kcal/kwh |
90% |
48.9 |
5 |
|
-- |
---- |
-- |
0 |
0 |
Project system diagram
Categories
New Blog