3.8.7 Heat Recovery Equipment

Heat Recovery Name
Applicability All heat recovery systems
Definition A name assigned to a heat recovery system. This would provide a link to the construction documents.
Units Text, unique
Input Restrictions As designed
Baseline Rules No heat recovery systems
Heat Recovery Device Type
Applicability All heat recovery systems
Definition The type of heat recovery equipment. Choices include:
  • Double-Bundled Chiller
  • Generator
  • Engine-Driven Chiller
  • Air Conditioning Unit
  • Refrigerated Casework
Units List (see above)
Input Restrictions As designed
Baseline Rules Heat recovery systems are not included in the baseline system.
Heat Recovery Loads
Applicability All heat recovery systems
Definition The loads met by the heat recovery system. Choices include:
  • Service water heating
  • Space heating
  • Process heating
More than one load may be selected.
Units List (see above)
Input Restrictions As designed
Baseline Rules Not required in the baseline system.
90.1-2016 BM

Heat Recovery Name

Applicability

All heat recovery systems

Definition

A name assigned to a heat recovery system. This would provide a link to the construction documents.

Units

Text, unique

Input Restrictions

As designed

Baseline Rules

No heat recovery systems

 

Heat Recovery Device Type

Applicability

All heat recovery systems

Definition

The type of heat recovery equipment. Choices include:

  • Double-Bundled Chiller
  • Generator
  • Engine-Driven Chiller
  • Air Conditioning Unit
  • Refrigerated Casework

Units

List (see above)

Input Restrictions

As designed

Baseline Rules

The baseline building is modeled with a condenser heat recovery system for service water heating, when all of the following conditions are true:

  • The building operates 24 hours per day.
  • The total installed heat rejection capacity of the water cooled system exceeds 6,000,000 Btu/h.
  • The design service hot water load is greater than 1,000,000 Btu/h.

The required heat recovery system for the baseline building, shall have the capacity to provide the smaller of:

  • 60% of the peak heat rejection load at design conditions, or
  • Preheat of the peak service hot water draw to 85°F

If the simulation software is not capable of modeling the requirements described, the requirement for providing such a system in the proposed building shall be met as a prescriptive requirement and heat recovery shall not be modeled in the baseline or proposed building designs.

 

Heat Recovery Loads

Applicability

All heat recovery systems

Definition

The loads met by the heat recovery system. Choices include:

  • Service water heating
  • Space heating
  • Process heating

More than one load may be selected.

Units

List (see above)

Input Restrictions

As designed

Baseline Rules

Service water heating when required as described above

 

Condenser Heat Recovery Effectiveness

Applicability

Systems that use recover heat from a condenser

Definition

The percentage of heat rejection at design conditions from a DX or heat pump unit in cooling mode that is available for space or water heating

Units

Percent (%)

Input Restrictions

As designed. The software must indicate that supporting documentation is required on the output forms if heat recovery is specified.

Baseline Rules

Same as the proposed

 

Condenser Heat Recovery Use

Applicability

Systems that use heat recovery

Definition

The end use of the heat recovered from a DX or heat pump unit. The choices are:

  • Reheat coils
  • Water heating

Units

List (see above)

Input Restrictions

As designed. The software must indicate that supporting documentation is required on the output forms if heat recovery is specified.

Baseline Rules

Not applicable for most conditions. The end use will be water heating if required for 24-hour facility operation.

Building EQ
Heat Recovery Name
Applicability All heat recovery systems
Definition A name assigned to a heat recovery system. This would provide a link to the construction documents.
Units Text, unique
Input Restrictions As designed
Heat Recovery Device Type
Applicability All heat recovery systems
Definition The type of heat recovery equipment. Choices include:
  • Double-Bundled Chiller
  • Generator
  • Engine-Driven Chiller
  • Air Conditioning Unit
  • Refrigerated Casework
Units List (see above)
Input Restrictions As designed
Heat Recovery Loads
Applicability All heat recovery systems
Definition The loads met by the heat recovery system. Choices include:
  • Service water heating
  • Space heating
  • Process heating
More than one load may be selected.
Units List (see above)
Input Restrictions As designed
Energy Star
Heat Recovery Name
Applicability All heat recovery systems
Definition A name assigned to a heat recovery system. This would provide a link to the construction documents.
Units Text, unique
Input Restrictions As designed
Heat Recovery Device Type
Applicability All heat recovery systems
Definition The type of heat recovery equipment. Choices include:
  • Double-Bundled Chiller
  • Generator
  • Engine-Driven Chiller
  • Air Conditioning Unit
  • Refrigerated Casework
Units List (see above)
Input Restrictions As designed
Heat Recovery Loads
Applicability All heat recovery systems
Definition The loads met by the heat recovery system. Choices include:
  • Service water heating
  • Space heating
  • Process heating
More than one load may be selected.
Units List (see above)
Input Restrictions As designed