Performance and economic evaluation of the seahorse natural gas hot water heater conversion at Fort Stewart. Final report

Abstract A small diameter water well drilled in 1977 in the Town of Bulyea, Saskatchewan generated such a rapid plugging (biofouling) that by 1979 the flow rate was reduced by 59%. Heavy growths of non-specific iron bacteria were found in the water and biofouling projected to be the principal cause of the flow loss. Tyndallization (repeated pasteurizations) treatment was applied using a hot water recycling system installed above the well head. Using a displacement passive gravity direct injection of hot water at 82°C from a water heater into the well, a sequential elevation of water column temperatures occurred until bio-film dispersion occurred (pasteurization) at 45°C+. A recovery to original flow specifications was repeatedly obtained at time intervals ranging from 6 to 403 days. Between treatments, a recurrence of biofouling was noted with flow reductions of 0.06 – 0.07 1/min/day frequently being noted. The rate of plugging appeared to be affected by the previous sequence of pasteurization treatments. Tyndallization was found to satisfactorily control iron bacterial biofouling and maintain flow rates.

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Research and development of an air-cycle heat-pump water heater. Final report

10.2172/5749191 ◽

1979 ◽

Cited By ~ 7

Author(s):

J.T. Dieckmann ◽

A.J. Erickson ◽

A.C. Harvey ◽

W.M. Toscano

Keyword(s):

Research And Development ◽

Heat Pump ◽

Final Report ◽

Water Heater ◽

Heat Pump Water Heater

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Blending of hydrogen in natural gas distribution systems. Volume III. Gas blends leakage tests of selected distribution system components. Final report, June 1, 1976--April 30, 1978

10.2172/6535751 ◽

1978 ◽

Author(s):

Keyword(s):

Natural Gas ◽

Distribution System ◽

Distribution Systems ◽

Final Report ◽

Gas Distribution ◽

System Components

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Influence of Far Infrared TiO2 and Multi-Walled Carbon Nanotubes Coatings on the Performance of a Hot Water Heater

Applied Sciences ◽

10.3390/app11157043 ◽

2021 ◽

Vol 11 (15) ◽

pp. 7043

Author(s):

Tun-Ping Teng ◽

Shang-Pang Yu ◽

Yeou-Feng Lue ◽

Qi-Lin Xie ◽

Hsiang-Kai Hsieh ◽

...

Keyword(s):

Carbon Nanotubes ◽

Heating Rate ◽

Heat Insulation ◽

Far Infrared ◽

Hot Water ◽

Insulation Material ◽

Water Heater ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes ◽

Insulation Performance

This study selects titanium dioxide (TiO2) and multi-walled carbon nanotubes (MWCNTs) as far-infrared materials (FIRMs), and further adds water-based acrylic coatings to prepare far-infrared coatings (FIRCs). FIRCs are uniformly coated on #304 stainless steel sheets to make the test samples, which are then installed between the shell and insulation material of the hot water heater to measure the influences of various FIRCs on the performance of the hot water heater. The research results show no significant difference in the heating rate or heat insulation performance of the hot water heater with or without FIRCs coating. However, the uniformity of the water temperatures of the test samples is significantly improved with FIRCs. Considering that the uniformity of water temperature will inhibit the heating rate and heat insulation performance of the hot water heater, TiO2-FIRC should provide better performance improvement when applied to the hot water heater in this study. The application of TiO2-FIRC to large-scale hot water heaters with a high aspect ratio will effectively improve the quality of hot water supply in the future.

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Solar Water Heater Design for Houses in Arid Zones

Volume 12: Systems and Design ◽

10.1115/imece2013-63239 ◽

2013 ◽

Author(s):

Ramses Vega ◽

Hector E. Campbell ◽

Juan de Dios Ocampo ◽

Diego R. Bonilla G.

Keyword(s):

Solar Collector ◽

Extreme Temperature ◽

Hot Water ◽

Arid Zones ◽

Water Heater ◽

Collector System ◽

End Use ◽

Flat Plate Solar Collector ◽

Demand Profile ◽

Heater Design

This paper shows the simulation and design of a flat plate solar collector system, used to feed hot water to a typical home located in the city of Mexicali, Baja California, México. The system consists of a solar collector, a storage tank, a water pump and accessories and special tools that allow its proper operation. Analyzing the consumption and end use of water in a typical House, a demand profile is established, which combined with the weather information of the region, constitutes the input parameters required for the simulation of the system, which is performed with the software package TRNSYS. Mexicali, due to its location (latitude 32 °, longitude 114 °) and semi-desert condition presents high temperatures in the summer and low in winter, so the design and operation of such systems require special features, not always considered in the conventional ratings. This paper presents methods for simulation and design oriented to optimize the dimensioning and operation of this type of solar heaters in regions with extreme temperature conditions.

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