Research Project Information

Research Project Summary Information

Demonstration of a Solar Combisystem at BNL officer club(ST10213-1)

Brookhaven National Lab


Combisystems have been developing in Europe since the 1980s. The systems typically include condensing boilers, stratified storage tanks, solar collectors and radiant floor distribution. These systems have larger collector areas than conventional solar water heaters. In Europe, 50% fuel use reductions have been reported for homes that replace existing boiler systems with combisystems. Rotex of Germany is one manufacturer of combisystems. Rotex and BNL have entered into discussions to test such a system in New York

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Project Description

BNL will install a combisystem at the Brookhaven Center, a 14,000 sq ft recreational facility. The system shall be commissioned to ensure proper operation, and the system’s performance shall be monitored for one year. BNL will prepare technical articles for publication in engineering periodicals.


The system is projected to reduce fuel oil usage at the Brookhaven Center by 1,209 gallons annually. This project would provide New York performance data for a very innovative solar thermal system that is gaining popularity in Europe.

Project Results


Brookhaven National Lab
32 Lewis Road Building 130
Upton, NY 11973

Principle Investigator

Tom Butcher

Universities Involved


Project Type:

Product Demonstration

Technologies Types:

Building Systems
Solar Thermal (heating & cooling)

NYSERDA Contact Information

Robert Carver


R&D - Buildings Research

Contract Details

Start Date: 1/11/2010
Project Status: Active
Contract Number: ST10213-1

Last Updated: 2/22/2012