Skip to content

Search the knowledge portal

  • PublisherASHRAE
  • Product CodeACHPDG
  • Number of pages368
  • Publication DateJun 2015
  • ISBN9781936504879

ACHPDG ASHRAE Combined heat and power design guide (2015)









ACHPDG ASHRAE Combined heat and power design guide (2015)

Combined Heat and Power Design Guide was written by industry experts to give system designers a current, authoritative guide on implementing combined heat and power (CHP) systems. CHP systems provide electricity and useful thermal energy in a single, integrated system. Heat that is normally wasted in conventional power generation is recovered as useful energy, avoiding the losses that would otherwise be incurred from separate generation of heat and power. Recent advances in electricity-efficient, cost-effective generation technologies -- in particular, advanced combustion turbines and reciprocating engines -- have allowed for new configurations of systems that combine heat and power production, expanding opportunities for these systems and increasing the amount of electricity they can produce. Combined Heat and Power Design Guide provides a consistent and reliable approach to assessing any site's potential to economically use CHP systems.

This guide provides up-to-date application and operational information about prime movers, heat recovery devices, and thermally activated technologies; technical and economic guidance regarding CHP systems design, site screening, and assessment guidance and tools; and installation, operation, and maintenance advice. As well as a glossary of terms, the book features extensive, detailed case studies on implementations in university, industrial, and hotel settings. Information is presented in both Inch-Pound (I-P) and International System (SI) units.

Also included with the book is access to the newly developed ASHRAE CHP Analysis Tool, a Microsoft® Excel® spreadsheet (in I-P units only) for use in assessing sites for CHP applicability.

An Errata Issued June 2015 is available from the ASHRAE website.


Chapter 1 – CHP Fundamentals
1.1 Introduction
1.2 Overview
1.3 History
1.4 CHP Trends
1.5 CHP Benefits
1.6 CHP Design Basics
1.7 Energy Efficiency

Chapter 2 – Application Load Assesssment
2.1 Load Types and Considerations
2.2 Efficiency versus Load Factor
2.3 Base, Average and Peak Loads
2.4 Thermal/Electric Ratio
2.5 Load Electric and Thermal Characteristics
2.6 Prime Mover Electric and Thermal Characteristics
2.7 Load Consolidation & Thermal Storage
2.8 Load Measurement and Logging
2.9 Prime Mover Selection
2.10 Typical Applications

ChapterR 3 – CHP System Design Considerations
3.1 Electric Load Profiles
3.2 Thermal Load Profiles
3.3 CHP System Configuration Options

Chapter 4 – CHP Application Assessment
4.1 Types and Scope of CHP Studies
4.2 Tools and Software for Feasibility Study

Chapter 5 – CHP Economic Analysis
5.1 Understanding CHP Output Value & Load Factor Impact
5.2 Utility Rates and Tariffs
5.3 Energy Supply Costs
5.4 Operating and Maintenance Costs
5.5 Other Costs and Taxes
5.6 Capital Costs

Chapter 6 – Power Generation Equipment and Systems
6.1 Prime Movers
6.2 Internal-Combustion Engines
6.3 Combustion Turbines
6.4 Microturbines
6.5 Fuel Cells
6.6 Heat-to-Power Equipment
6.7 Other Heat-to-Power Systems
6.8 Generators

Chapter 7 – Heat Recovery and Thermally Activated Technologies
7.1 Heat Recovery Devices
7.2 Reciprocating-Engine Heat Recovery
7.3 Combustion Turbine Heat Recovery
7.4 Microturbine Heat Recovery
7.5 Fuel Cell Heat Recovery
7.6 Thermally Activated Equipment
7.7 Integration with Building Systems

Chapter 8 – CHP Regulatory and Policy Issues
8.1 Regulation
8.2 U.S. Federal CHP Energy Policy
8.3 Federal CHP Tax Policy
8.4 State CHP Energy Policy
8.5 Grant Assistance Requirements
8.6 M&V Reporting

Chapter 9 – Carbon Reduction, Environmental Benefits, and Emissions Controls
9.1 CHP Fuel Use and CO2 Emissions Calculations
9.2 Environmental Emissions from CHP
9.3 Environmental Benefits of CHP
9.4 Emission Control Technologies for CHP

Chapter 10 – Construction Contracting
10.1 Traditional Contracting: Design/Bid/Build
10.2 Construction Management Contracting: Design/Bid/Build
10.3 Engineering/Procurement/Construction
10.4 Permitting Requirements
10.5 Project Development Options
10.6 Project Schedule and Implementation

Chapter 11 – Case Studies
11.1 University Campus
11.2 Pharmaceutical Research/Manufacturing Facility
11.3 Luxury Full-Service Hotel

Chapter 12 – CHP Analysis Tool
12.1 Site Data Input Worksheet
12.2 CHP System Input Worksheet
12.3 Print Page Worksheet

Appendix A – Glossary
Appendix B – Exergy Analysis
B.1 The Meaning of the Second Law
B.2 Definitions and Concepts
B.3 Exergy Analysis Examples
B.4 Fuel Gas Compressor Load Calculation

Selected Bibliography