Dr.-Ing. Ulrich Leibfried

Consolar Energiespeicher — und Regelungssysteme GmbH
StrubbergstraBe 70, D-60489 Frankfurt/M * Gewerbestr. 7, D-79539 Lorrach
Tel.: (0049 -69) 61 99 11-30 Fax: -28 * Tel.: (0049 -7621) 42 22 8-30, Fax: -31:

E-Mail: info@consolar. de
Internet: http://www. consolar. de

1. Introduction

It has been known for more than 10 years that low-flow solar systems increase the energy yield by up to 10 % and that additional savings lie in the installation process of such technology. Nonetheless there are only few suppliers in the German Market offering stratification-type domestic hot water heater tanks suitable for low-flow solar applications. The last few years showed even a trend towards cheaper hot wa­ter storage tanks, although often at the cost of reduced quality.

In 2003 Consolar entered the market against this trend with a new compact storage tank for solar applications. Inside this storage tank a highly efficient stratifying heat exchanger, for which a patent is pending, provides for very good cooling of the so­lar circuit even in low-flow operating mode. The development of this heat exchanger was further advanced at the end of 2003.