S.N 10 - Homeland Hotel Green Energy Center

Project name: Homeland Hotel Green Energy Center
Project location: Sichuan, Chengdu

Equipment selection:
1 unit each of 1750kW Multi-energy absorption chiller
(exhaust+hot water with natural gas as back-up)
2326kW exhaust LiBr absorption chiller
2 unit 200*104kcal/h vacuum boiler
80*104kcal/h vacuum boiler
Water (low) source heat pump integrated and split series units
Ground source heat pump

Project area: 400 mu
Main function: Cooling, heating and domestic hot water for hotel, meeting, villa
Operation time: 2003

General introduction

Homeland hotel is a 5 star hotel with 228 sets of luxury suites and 37 sets of villas, which is the 1st villa-type 5 star hotel in China.
The designed air conditioning load is 7500KW, if adopt air compress conditioning system, the power demand of chiller is 1500KW and the whole system is 2440KW, whole power demand of lighting system is. The total installed capacity is 5500KVA. As to common design, 5 star hotel must adopt dual power supply system and set up emergency power supply, the total investment is extremely high.
After adopting the tri-generation/CCHP system, all of the electricity power is supplied from the system. Since unit heat price of natural gas is much lower than diesel, natural gas fired generators are selected as the main generators while diesel fired generator was set as the back up in case of lacking of natural gas. The energy center is dual fuel fired and multiple generators operate parallel, the power supply is table and total installed capacity is 6800KW( including 2800KW back up diesel fired generator). In addition, the cooling is supplied by recycling waste heat from generator, the power consumption of air conditioning system has been reduced greatly. The actual power load of whole hotel is only around 3000KW.
There are 8 units natural gas fired generator with unit capacity 500KW, and 4 units diesel fired generator, which has taken the consideration the emergency power supply if some generators stop. The general design of emergency center is completed at one time and installed step by step according to actual operation.
The yearly power consumption of homeland hotel is 9,000,000KWH and natural gas consumption is 2,900,000m3. Energy cost is 2,697,000 RMB and maintenance cost is 320,000 RMB, total operation cost is 3,017,000 RMB. Meanwhile, the system has supplied 74,000m3 hot water by recycling waste heat, which save natural gas by 528,570m3 and cost by 491,570RMB.

High Efficient

The total energy efficiency to more than 50% by the step utilization of energy.

High Efficiency

Because natural gas is used as the main fuel for the system, harmful gas emissions has been reduced. SO₂ and solid waste emission is nearly zero and SO₂ emission is reduced by at least 50%.

Peaking Regulation

The consumption of natural gas in summer is less but much more in winter. While for tri-generation/CCHP system, the natural gas consumption is more is more in summer and less in winter. So, the system realized peak load shifting.