Full Description

Thermodynamic models for two district heating, cogeneration steam cycles were developed in this study. These cycles are an extraction-condensing turbine cycle and a back-pressure turbine cycle. Heat and electrical outputs of these cycles were calculated for inlet conditions ranging from 580 psi, 752 F, to 1740 psi, 995 F (4 MPa, 400C to 12 MPa, 535C), and district heat supply temperatures ranging from 194 F to 248 F (90C to 120C). Furthermore, the performance of these cycles from 0 to 100% of their maximum heat outputs were examined.

A simple method of economic analysis based on annual costs was developed, which can take part-load operations into consideration. An extraction-condensing system and a backpressure system were compared using this method.

Units: Dual

Citation: ASHRAE Transactions, 1987, vol. 93, pt. 2, Nashville, TN

Product Details

Published: 1987 Number of Pages: 12File Size: 1 file , 880 KB Product Code(s): D-NT-87-3074