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HSU Dorm Cogeneration
The History of CoGeneration
Fuels to be used
|heating + electricity||Diesel Fuel|
|heating||Waste Vegetable Oil Veggawatt* |
|heating + electricity||Steam|
|heating + electricity||Coal|
|hot water + ambient heat ( H.S.U.)||Natural Gas|
Cogeneration at Humboldt StateThe cogeneration building is located in the front parking lot of the Jolly Giant Commons(JGC)(Figure 2). This building often has a few service vehicles outside and is closer to the forest wall on the left of the parking lot when looking at it from the road. After talking with a few HSU staff members, we tracked down the Maintenance Supervisor (housing and dining services) here at HSU, Tim Freeman, who kindly gave us a tour of the cogeneration system present here,on campus. Tim also provided us with useful information on how Cogeneration works.
The cogeneration Unit runs 24/7, and has been since its installation in 1987 Unlike the majority of other cogeneration facilities serving different functions, the system here at Humboldt produces hot water and ambient heating instead of heating and energy production. This system supports a majority of residence halls, here on campus, with on demand hot water and ambient room heating, for students. The cogeneration unit is constantly producing around 350KW (350,000 Watts), and all of the hot water, heat and energy produced on campus is used on campus. Under every residence hall that this system covers, is a boiler and a heating unit, except Canyon, which only has air heating units. These boilers were set in place when the halls were made but since the cogeneration unit's construction, they are not being used.
These older boilers under the halls are only used when the system for some reason doesn't work (which is near never).
The Distribution Loop at Humboldt
- The cogen motor responsible for heating and transporting water through the arterial network, runs on natural gas purchased from PG&E on a monthly bid contract. (Calculating just the right amount of fuel needed per month ensures the best contract price per billing cycle.
- This system has an alarm 'call' system, which, when the system has an issue, it contacts Tim Freeman(head of HSU maintenance), who then calls in one of his workers to either check out the issue or fix whatever has happened.
- It is mandatory that the engine is removed from the Cogeneration building to be cleaned, lubricated, and checked every fourteen years.
Known Issues With Our Unit Here On Campus
- The entire system is directly connected and there is no way of isolating any part of the system, which means that when one part of the system goes down, the rest is affected.
- The heating distribution among the Canyon buildings was poorly made, resulting in two of the buildings being constantly heated because there is no ventilation for excess heat.
- Because there is extremely hot water coming straight out of the co-gen plant, the engineers had to add a cooling system so that the water that went into the buildings could be used for showering.
Another CoGen system here on campus
During an interview with Tim, he mentioned Humboldt also has a useless 700,000 dollar cogeneration unit in place, adjacent to the newer gymns. Tim continued to iterate that the reason behind the systems dysfunction, was due to the company that was hired to install the infrastructure, failing to configure it correctly. This resulted in a faulty regulation system, which overworked the engine, burning it out. Mr. Freeman continued to iterate that due to ongoing budget challenges, there is little incentive to address the system, at this time.
- "Cogeneration - History Of Cogeneration". Science Encyclopedia. &amp;amp;amp;lt;http://science.jrank.org/pages/1572/Cogeneration-History-cogeneration.html&amp;amp;amp;gt;.
- U.S. Environmental Protection Agency. &amp;amp;amp;lt;http://www.epa.gov/&amp;amp;amp;gt;.
- "Combined Heat and Power Partnership". U.S. Environmental Protection Agency. &amp;amp;amp;lt;http://www.epa.gov/chp/&amp;amp;amp;gt;.
- "Archive for the ‘cogeneration’ Category". Carbonetix. &amp;amp;lt;http://carbonetix.com.au/ &amp;amp;gt;.
- "Archive for the ‘cogeneration’ Category". Carbonetix. &amp;amp;amp;lt;http://carbonetix.com.au/ &amp;amp;amp;gt;.
- "Archive for the ‘cogeneration’ Category". Carbonetix. <http://carbonetix.com.au/ >.
Freeman, Tim. Personal INTERVIEW.