ENVIRONMENTALLY FRIENDLY TECHNOLOGY
Typical piping diagram (DE)
Figure 32. Typical piping diagram
Air conditioner | Expansion tank |
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| COOLING |
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| TOWER |
| HC | C |
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| Flue | Water supply |
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| Chilled / hot | P | T |
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| water pump |
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F |
| (primary) | P T |
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Chiller / hot |
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| P | T |
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water pump | P | T |
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(secondary) | Air vent | ||||
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| Tank |
Supply |
| Return |
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| Fuel | 1M3 | ||
header |
| header |
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| Cooling water pump |
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To drain ditch
T : Thermometer | P : Pressure gauge F : Flow meter | : Water pump | : Strainer | : Valve | : Valve | : Thermostat |
In order to prevent freezing up of chilled water when the chiller/heaters get a stop signal, continue the operation of the primary and secondary chilled/hot water pumps and air conditioner during dilution cycle operation of the chiller/heaters.
(about 15 minutes).
General remarks on piping work
SUPER ABSORPTION
Steam-fired chillers
Cooling cycle schematic
Figure 33.
� | 2.2 |
| Heat | 1.0 | |
Heat sink |
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| � | � | Steam | |
| � | Low Temperature� |
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� | High Temperature� | ||||
Generator | |||||
Cooling Water | Condenser | Generator | |||
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1.Equipment and parts outside the area surrounded by the broken line are not supplied by SANYO.
2.Refer to the “Dimensions” for pipe connections and diameters.
3.Determine the locations of the chilled/hot water pumps, cooling water pump and expansion tank in due consideration of the pump’s hydrostatic head.
The chiller/heaters should not, as standard condition, be subject to a pressure larger than 784kPa (8 kg/cm2G) at any water headers.
4.Concerning the temperature control of cooling water, refer to the section of “control method of cooling water temperature”.
5.The chilled/hot and cooling water pumps should preferably be provided exclusively for each chiller/heaters.
6.During heating operation, cooling water must be discharged.
7.Provide a thermometer and pressure gauge at the outlet and inlet of the chilled/hot and cooling water pipe connections.
8.Provide an air vent valve in each of the chilled/hot and cooling water lines at a point higher than each header.
9.Lay pipes from the cover of the evaporator, absorber and smoke chamber to the drain ditch.
10.Provide expansion tank in the chilled/hot water line.
11.Provide a bleeder in the cooling water line for control of water quality. 12.There should be a sufficiently large clearance for easy access to the
evaporator, absorber and condenser, to facilitate inspection and cleaning work.
13.Provide heat insulation to the flue, which should be equipped with a damper and condensate drain.
14.Do not connect the flue to the smoke stack of an incinerator. 15.When one flue is used for two or more chiller/heaters, a device
has to be provided to prevent the flow of exhaust gas into the one which is out of operation.
16.The exhaust discharge end of the flue should be kept a sufficiently large distance away from the cooling tower.
17.Provide a draft regulator if the static pressure inside the flue is subject to fluctuations.
18.Fix the rupture disk on the chiller/heaters according to the manual of rupture disk, if necessary.
19.All external water piping with JIS 10k welding flanges are to be provided by the customer.
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Chilled Water� |
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| High Temperature� | |
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| Heat Exchanger | |
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| SteamTrap |
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| Steam Drain | ||
| Heat Reclaimer | |||
Evaporator |
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� | Low Temperature� |
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Absorber | Heat Exchanger |
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| Cooling Water |
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Refrigeration capacity 1.2
Conc. solution | Int. solution | Dil. solution | Liq. refrigerant | Vap. refrigerant | Cooling water | Chilled water | Steam |
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42 | 43 |
