Research on oilfield distributed energy efficiency evaluation and mode based on energy flow

This paper selected the independent generation conditions of the generator set as a reference, and studied the energy efficiency under different utilization modes of distributed energy according to the comparable performance coefficient (CCOP). The results showed that for cooling condition, according to the CCOP, the different cooling methods can be sorted as following: hot water absorption unit > steam absorption unit > direct-fired unit > air conditioner. However, according to the traditional COP, it was air conditioner > direct-fired unit > steam absorption unit > hot water absorption unit. The phenomenon was caused by ignoring the cascade utilization of energy in traditional utilization mode. For heating condition, the results obtained by CCOP and COP was in consistent, presenting hot water absorption unit > steam absorption unit > air conditioner > direct-fired unit. Therefore, whether operating under cooling or heating conditions, the CCOP of direct-fired unit and air conditioner was basically the same, and the traditional COP was not much different. On the other hand, the sorting results obtained by CCOP in heating mode are the same as the traditional method, which proved the effectiveness of this method.