How to calculate avoided costs in a cogeneration cycle

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · Energy Manage.; (United States)

OSTI ID:5108378

Hoover, H

When calculating the value of heat recovered from engine exhaust in a cogeneration cycle, some energy managers and engineers use the 3413 standard of evaluation: that is, that 3413 Btu of recovered engine exhaust heat has a financial value equivalent to the cost of one kilowatt hour of utility-purchased electricity. The standard establishing 3413 Btu as the equivalent of one kilowatt hour is valid where the heat output from a 1000-watt electric resistance heater is used to add 3413 Btu from electric resistance heat to 23.70 pounds of water in one hour. The temperature of that amount of water will, in one hour, increase 144/sup 0/F (3413/23.70 = 144). To avoid the latent heat range, the starting temperature of the water must not be greater than 67/sup 0/F at sea level. Unless the 3413 standard is understood, it can lead to expensive mistakes in projected avoided costs.

• Research Organization: Home Federal Savings and Loan Association, San Diego, CA
• OSTI ID: 5108378
• Journal Information: Energy Manage.; (United States), Journal Name: Energy Manage.; (United States) Vol. 9:6; ISSN EMTAD
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320304* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
CALCULATION METHODS
COGENERATION
COST BENEFIT ANALYSIS
DEUS
ENERGY SYSTEMS
POWER GENERATION
STANDARDS
STEAM GENERATION