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| HCI Thermal Fluid & Process Heaters |
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Industrial Products > HCI Thermal Fluid Heaters > Thermal Efficiency
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Thermal Efficiency
Aside from safety and reliability, thermal efficiency is probably the most important aspect of any heater. Heatec's HCI helical coil heaters approach the theoretical limits of thermal efficiency possible in fired 2-pass heaters. Our heaters can obtain thermal efficiencies up to 91.5 percent LHV.
The importance of thermal efficiency is readily appreciated by comparing how much fuel they use. The chart below shows a comparison of fuel usage for heaters of various efficiencies.
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| THERMAL EFFICIENCY | | Efficiency | Therms/Hour | Therms/Month |
Therms/20 Yrs |
| 50% | 22.1 | 15,944 |
3,826,560 |
| 60% | 18.3 | 13,168 |
3,160,320 |
| 70% | 15.8 | 11,364 |
2,727,360 |
| 80% | 13.8 | 9,963 |
2,391,120 |
| 85% | 13.0 | 9,365 |
2,247,600 |
| 88% | 12.6 | 9,061 |
2,174,640 |
| These usages are based on a 1-million Btu per hour heat load, operating 24 hours a day, 7 days a week, 52 weeks a year, and natural gas with a heating value of 100,000 Btu per therm. |
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Efficiency is a measure of a heater's input vs. its output. The more of the input that ends up in the output, the higher the efficiency. It is theoretically impossible to reach 100 percent efficiency because there will always be some heat loss through moisture. However, the amount of heat absorbed by the coil and the amount lost through the shell can be controlled by careful design and construction.
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| | WHERE THE HEAT GOES |
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