Reports & Materials

Technical Report

Evaluation of the Multi-Family Pilot Project

In the fall of 1984 Minnegasco and the Minneapolis Energy Office (MEO) initiated the Multifamily Pilot Project (MFPP) to demonstrate the effectiveness of an energy conservation installation program for multifamily buildings.

Technical Report

Converting Steam Heated Buildings to Hot Water Heat: Practices, Savings and Other Benefits

As part of an effort to gather reliable information on conservation measures for multifamily buildings, the conversion of steam heating systems in older buildings to hot water heating systems was investigated.

Technical Report

Heating Cost Allocation: Centrally Heated Rental Housing, Energy Conservation Potential and Standards Issues

Economic analysis showed that the owners could achieve a one year payback while increasing tenants’ total average costs by only five dollars per month. Owners reported generally positive tenant reactions and no long term increase in turnover or vacancy.

Technical Report

Characterization of 5 to 9 Unit Residential Buildings in Minneapolis

A study done by the Minneapolis Energy Office (MEO) characterizing 5 to 9 unit residential buildings in Minneapolis was conducted as one segment of an overall multifamily baseline study.

Technical Report

Achieving Even Space Heating in Single Pipe Steam Buildings

The Minneapolis Energy Office has been involved with research and testing of steam heated apartment buildings for four years. This paper summarizes and reports the results of our testing and the conclusions of our work to date.

Technical Report

Measured vs Predicted Savings from Single Retrofits

Energy savings from single retrofits in one-and two-unit homes have been investigated in order to provide more reliable estimates to homeowners who are considering a conservation investment.

Technical Report

Calibration of an Outdoor Reset in a Steel Fire Tube Boiler with a 3-way Mixing Valve

The Minneapolis Energy Office installed outdoor resets and 3-way mixing valves in three hot water multi-zone buildings with steel fire tube boilers in order to determine the cost and savings of this retrofit.

Technical Report

Data Quality Considerations in Using the Prism Program

We have found PRISM to be quite user-friendly and to normally produce realistic and robust estimates, but our testing and production experience also shows that its results can be quite erroneous if insufficient attention is given to several crucial data quality issues.

Technical Report

Single Pipe Steam Air Venting

The Minneapolis Energy Office conducted experiments both in the laboratory and in the field to investigate the properties of single pipe steam air venting.

Technical Report

Superinsulation – Questions of Cost Effectiveness

The energy use and economics of a group of superinsulated and conventional houses were studied. Conventional construction was found to use considerably less energy than is generally assumed. The economic advantage of superinsulation is therefore less.