Abstract
The aim was to investigate the potentials for reducing the cost of a new district heat distribution network by introducing a single pipeline system comprising long stretches of pipe without joints running from house to house so that underground joints are avoided. In each house a 300 liter accumulator tank is charged in turn as a hot pulse spreads around the network so that the cold water in the pipes from the individual consumer is continually pushed forward in front of the hot pulse. A computerized simulation showed that this form of operation could be feasible if the hot pulse is well-defined and if there is a distance of less than 600 meters to the first consumer. The amount of heat loss from flexible plastic pipes with flexible polyurethane foam insulation is reckoned to be 50% more than claimed by the manufacturer. In the case of a single pipeline system the heat loss in the district heating distribution network could be reduced by more than 50% as operation is constantly optimal. It is suggested that consumer installations comprising twin pipes running from house to house without underground joints, with a traditional operation, can be initiated at a cost 25% cheaper
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Citation Formats
Astrupgaard, N P.
Pulsating district heating with single pipeline network system; Enstrenget, pulserende fjernvarme.
Denmark: N. p.,
1993.
Web.
Astrupgaard, N P.
Pulsating district heating with single pipeline network system; Enstrenget, pulserende fjernvarme.
Denmark.
Astrupgaard, N P.
1993.
"Pulsating district heating with single pipeline network system; Enstrenget, pulserende fjernvarme."
Denmark.
@misc{etde_10116524,
title = {Pulsating district heating with single pipeline network system; Enstrenget, pulserende fjernvarme}
author = {Astrupgaard, N P}
abstractNote = {The aim was to investigate the potentials for reducing the cost of a new district heat distribution network by introducing a single pipeline system comprising long stretches of pipe without joints running from house to house so that underground joints are avoided. In each house a 300 liter accumulator tank is charged in turn as a hot pulse spreads around the network so that the cold water in the pipes from the individual consumer is continually pushed forward in front of the hot pulse. A computerized simulation showed that this form of operation could be feasible if the hot pulse is well-defined and if there is a distance of less than 600 meters to the first consumer. The amount of heat loss from flexible plastic pipes with flexible polyurethane foam insulation is reckoned to be 50% more than claimed by the manufacturer. In the case of a single pipeline system the heat loss in the district heating distribution network could be reduced by more than 50% as operation is constantly optimal. It is suggested that consumer installations comprising twin pipes running from house to house without underground joints, with a traditional operation, can be initiated at a cost 25% cheaper than a network with steel pipes. Here heat losses could be reduced by 15%. The single pipeline network would be ca. 5% cheaper than a similar network in steel, and would lead to a halving of heat losses (from 93 MWh/yr to ca. 40 MWh/yr in a network with 27 consumers). It is recommended to adopt the twin-pipe system where it should be possible to change from traditional to a single pipeline operation with parallel flow. (AB) (12 refs.)}
place = {Denmark}
year = {1993}
month = {May}
}
title = {Pulsating district heating with single pipeline network system; Enstrenget, pulserende fjernvarme}
author = {Astrupgaard, N P}
abstractNote = {The aim was to investigate the potentials for reducing the cost of a new district heat distribution network by introducing a single pipeline system comprising long stretches of pipe without joints running from house to house so that underground joints are avoided. In each house a 300 liter accumulator tank is charged in turn as a hot pulse spreads around the network so that the cold water in the pipes from the individual consumer is continually pushed forward in front of the hot pulse. A computerized simulation showed that this form of operation could be feasible if the hot pulse is well-defined and if there is a distance of less than 600 meters to the first consumer. The amount of heat loss from flexible plastic pipes with flexible polyurethane foam insulation is reckoned to be 50% more than claimed by the manufacturer. In the case of a single pipeline system the heat loss in the district heating distribution network could be reduced by more than 50% as operation is constantly optimal. It is suggested that consumer installations comprising twin pipes running from house to house without underground joints, with a traditional operation, can be initiated at a cost 25% cheaper than a network with steel pipes. Here heat losses could be reduced by 15%. The single pipeline network would be ca. 5% cheaper than a similar network in steel, and would lead to a halving of heat losses (from 93 MWh/yr to ca. 40 MWh/yr in a network with 27 consumers). It is recommended to adopt the twin-pipe system where it should be possible to change from traditional to a single pipeline operation with parallel flow. (AB) (12 refs.)}
place = {Denmark}
year = {1993}
month = {May}
}