Centralised cooling system to reduce energy usage by 30% in Singapore's Tengah estate
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- Опубликовано: 18 окт 2020
- More than 20,000 flats in Singapore's upcoming Tengah estate will be able to achieve energy savings of up to 30 per cent, thanks to a new centralised cooling system. It is a first for a large-scale residential development in Singapore. SP Group, which is spearheading the project, is hoping to roll it out to more estates.
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I am glad to hear about this. And I am not surprised to read "Germany" on the system.
But everyone could do a lot more, if double pane windows were made standard, and the walls had better insulation, at least on the sun facing side. Low tech solution that may bring also about 30 %.
this is a very good initiative. just hope they keep the costs down. aside from energy efficiency, 1 more plus point is that you dont have to bear with your neighbours' humming condenser. it can get super annoying in the wee hours
A big chiller is a lot more cost effective and efficient way to cool many units than individual window air conditioner. But for the project to be successful , they need everyone on board and remain profitable under economies of scale.
Good idea! But if the central unit is down ... the whole block would complain. BTW you could also provide a hot water circuit on the condenser side + a top-up boiler to provide hot water to the households. This could also save 30% of the cost of producing hot water for bathing/kitchen etc.
The blocks are interlinked for redundancy
Gurl, tropical countries don't need much hot water for bathing. 🥴
There are several other technologies that can be used in combination to save energy, like free cooling, where the water is rotated in drilled holes in the ground where cool temperatures can be found for many places around the world. Then you do not need any HVAC unit at all, just a pump station. When you need the centralized HVAC unit the drilled holes can be used to cool the condensor. So with good planning very efficient systems can be built.
The company I work for usually reach SCOP values in the 8-10 region.
The system we use is modular were multiple 30kW chiller units are parallelled for up to 2MW of cooling. Actually there is no limit, but 2MW are the biggest we have built.
The biggest benefit with the modular system is that you can remove any of the 30kW units without effecting all the others.
That way single units can be removed for service or repair and then just plugged in again.
So even with a central unit operational reliability can be guaranteed. Only a power out will stop the system.
Search SCMREF on Linkedin to find out a bit more. All this with R290 propane as refrigerant which is very environment friendly with it's GWP at 3.
Where I live, we found that water chilled coolers contribute to dampness in the house and would encourage growth of mould and mildew. Nothing like the real thing - refrigerated cooling.
'Feels like a fan': Tengah home owners raise more issues with new centralised cooling system.
'It's very ugly': Tengah flat buyers unhappy over look of centralised cooling system.
2024 now..... save energy sure.... but i wonder does monthly bill cost more than normal aircon? Hmm.
Maybe short term benefits....?????
Installation fee by resident or by gov???
What is the idea? You save $$ and the public pay?
SP just changed its cost savings on website from 30% to 17%😆
Why would electricity seller want to sell less electricity? Will electricity tariffs go up? So they may produce less electricity? And is anyone paying more? I hope electricity consumption go down but really hope electricity rate be raised so that electricity sellers can continue to grow . Its like we consume less electricity but bills remain the same while we can claim that we are eco friendly and consuming less energy while paying the same or more?? How does my idea sound? I would suggest a reason for fee hike ny saying energy cost have gone up but i wont have data to prove it and can say its to save the planet against global warming
*Reducing Urban Heat In Singapore*
2 simple, fundamenta, effectivel and cheap long term solutions for reducing urban heat in Singapore:
1) Plant more trees near areas where there are running water in streams, canals or rivers
2) Create more running waters in streams near areas there are more trees.
Notes:
1) Other vegetation do not result in as much water evaporation as water evaporation by trees
2) Trees not near running water or streams may not have enough water for water evaporation to effectively reduce ambient heat in the environment or to reduce urban heat
3) Most current air-con systems are very wasteful as they merely transfer indoor heat to outdoor, resulting in increase in the ambient temperature in the environment or increase in urban heat.
How are excess heat in the new centralised air-con system expelled? Back to square one if the excess heat is expelled back to the environment/atmosphere, resulting in increase in urban temperature / heat. If extra heat expelled to underground heat sink or nearby sea warer, where it is gradually dissipated, then can result in reduction in urban temperature / heat?
What's you email ID, lets talk more on this Sir!
Putrajaya did this 23 years ago. But it did not take off. This will be watched closely.
Evaporative cooling is decade old tech
Its not evaporative cooling. Its water cooling. Same tech for large commercial buildings.
This didn't age well. Now the Tengah BTO CCS project has become a farking joke of the century.
Nothing new
but is new for HDB flat
@@JohnCena2006 No, not at all.
The company I work for have been suppling this kind of water based centralized cooling with R290 Propane (GWP=3) since 2013...