Product
Pressure Maintaining System
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· Working Temperature : 120℃ (non-diaphragm, 99.9% N2 gas filled) · Capacity : 100m³ per unit (up to 5m³ for existing bladder type) · Expansion control available even during power failure · Prevention of hot water flushing in pipelines in power failure · Desertion mode (removes air continuously or in scheduled time) · Remote control and Online monitoring/control · Emergency operation : Operable in case of failure of pressure sensor(PT) and PLC · Control of N2 concentration : optimal N2 concentration in expansion Tank · Operation trend, information and analysis data are available on the display screen |
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· Gases filled | Compressor->cooler->refrigerated dryer-> 4-stage filter N2 Gas generator->N2 receiver tank->electronic Valve | |
| · Expansion control | Pressure sensor-motor valve/1st pressure relief valve, 3-speed manual + emergency operation in case of failure of pressure sensor PLC | ||
| · Return control | Water return pump-motor valve of PRV, 3-speed manual | ||
| · Level control | Optimal level control | ||
| · Parallel control | expanded water drained to the adjacent heating system |
| · | Economic benefit : | approximately 20-30% less cost annually than individual heating and enhanced heating efficiency (35% for generation, 85% with combined heating and cooling system) |
| · | Environmental benefit : | integrated system makes it applicable to high-tech anti-pollution facilities and energy saving improves air quality |
| · | Safety : | generating heat and electricity by section reduces risk factors at a national level (prevents blackouts) |
| · | Convenience : | stable indoor heating and hot water are available 24 hours a day and expanded living space by reducing individual boiler rooms |
| Item | Existing expansion tank | Eco-Trol System |
| Temp, resistance System temp |
Device design temp : 80℃ (limit of diaphragm type) System design temp : 120℃ |
Device design temp :120℃(no diaphragm used) System design temp :120℃ |
| Capacity | Existing bladder type used Up to 5m³(50m³ needed) one-dimensional type exceeds device division limit |
Filed with N2 gas(N2 generation 99.9%) compressor/filtering/refrigerating dryer/N2 gas generator Pressurized container used, 100m³ available for a unit |
| Prevention of flushing |
With the system design temp 120℃, evaporation is likely in pipeline, and in the event of evaporation, circulation is impossible (heating is impossible, leading to customer complaints) |
Pressurization included with the proper pressurization system in the pipeline. Having includes evaporation prevention stabilization feature |
| Expansion control | Opening/closing electronic valve or pressure difference | Three-stage safety device used |
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1. Electric type: pump+2 units of motor valve 2. Mechanical type: Primary pressure relief valve (in case of blackout, breakdown) 3. Emergency control available |
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| Return control | Pump or pressure difference | Three-stage safety device used |
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1. Electric type: pump and 2 units of motor valve 2. Mechanical type: PRV (in case of blackout, breakdown) 3. Emergency control available 4. Others: Thermal Relief Line Installation (to protect pump) |
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| Blackout Counter measure |
Expansion allowance impossible Water hammer by pump trip during blackout causes evaporation in low pressure section of the pipeline, making circulation impossible. |
Expansion allowence: electric + mechanical Water hammer prevention system in case of blackout(tank pressurization type) |
| Auto | 1. Minimally functioning auto controller | 1. PLC+touch screen+remote control+BAS interface 2. Emergency control available (workable in case of breakdown of auto control system) |
| Expansive energy saving |
Unable to respond on its own | Actively copes with variable water control system to reduce energy loss in both the heat load and the power plant |
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| District Heating Supply System with Booster pump |
Community Energy System for Dongnam CES Project |
Resource Pecovery Facility plant |
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| 8m² X 2unit | 20m² X 2unit | 15m² X 2unit | |||||||
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| 3-stage Safety Control Expansion | Compressor and N₂ Generator | |
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| Control Panel(Touch Screen) | ||
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| ■ Bomb type ■ N₂ GEN. type |
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In case of using standard model of district heating system |
> Daily N² gas use | |
| > One time of 25% of maximum expansion 0.5K 60³=1K, 30Nm³/day | ||
| In case of using N₂ bomb (gas bomb replaceable type) |
> 30Nm³/day x 30days/month x 12months = 10,800m³/year | |
| > 2,500won/m³ x 10,800m³/year = 27,000,000won/year | ||
| > 10-year LCC:27,000,000won/year x1.1(maintenance cost)=297,000,000won | ||
| In case of using N₂gas generator |
> Initial investment: 40,000,000won(depreciation for 10 years) | |
| > Electricity bill: {3.75hrx5kW/hx30days12monthsx65won/kW}x10year=4,387,500won | ||
| > 10-year L.C.C:(40,000,000+438,750)x1.1(maintenance cost)=44,482,700won | ||
| Economic profits | > Return on investment period: 44.5/29.7=1.49yrs(1.5yrs) | |
| > 10-year return on investment: 252,804,800won | ||
| Safety | > Runs at a low pressure, thus not subject to the law related to handling high pressure gas | |
| > The N² generator minimizes its driving power, which makes it semi permanent. |
