Carnegie Mellon University Website Home Page
 

Equipment

The four key components in the Biodiesel Engine-Generator with Heat Recovery system are:

Engine-Generator

Steam Generator

Coolant Heat Exchanger

Steam-Hot Water Converter 

Engine-Generator(Top)

A John Deere 4024TF270 engine has been selected for this project. The engine materials (fuel lines and gaskets) have been modified to handle 100% biodiesel (B100) fuel by the manufacturer. A Baldor 30 kW generator is attached to the engine and is installed in parallel with the grid using an ASCO 7000 Series Soft Load Transfer Switch.

Engine-Generator
 

Biodiesel Fueled Engine-Generator

Steam Generator(Top)

A Vaporphase ECXSH-3080-2.0 steam generator has been selected for this project. The steam generator is an oversized unit, however it is the smallest steam generator available. The 8 Bar (92 psia) steam is used in the steam absorption chiller and a hot water converter during the summer and winter respectively. 


Steam Generator

Steam Generator with Exhaust Gas Bypass Valve

Coolant Heat Exchanger(Top)

An ITT PHE-Type P4-18-TL plate and frame heat exchanger was selected to operate in parallel with the engine’s radiator. The coolant heat exchanger transfers thermal energy from the engine coolant to either the ventilation system for regenerating the solid desiccant or directly to the IW for space heating.


 Coolant Heat Exchanger

Wall Mounted Coolant Heat Exchanger

Steam - Hot Water Converter(Top)

The Steam-Hot Water Converter was initially used to supply hot water to the Radiant Systems in the IW using campus steam. The steam output from the steam generator has been tied into this system so the recovered heat from the engine-generator can be used to heat the IW in the winter.


 Steam-Hot Water Converter

Steam - Hot Water Converter

For additional equipment specifications, images, and descriptions click on Auxiliary Equipment.