asteroza + hvac   46

Numerical investigation of the convection heat transfer driven by airflows in underground tunnels - ScienceDirect
Using subway tunnels as the heat source in a ground source heat pump setup for district heating maybe. I suppose that's one solution to the London Underground overheating problem...
heating  cooling  HVAC  subway  tunnel  ground  source  heat  pump  district 
june 2019 by asteroza
Saarbrücken research team uses artificial muscles to develop an air conditioner for the future | Universität des Saarlandes
Using nitinol shape memory alloys as the thermal medium/matrix in a thermal wheel rotary air heat exchanger, where the wheel itself is the HVAC system!
rotary  heat  exchanger  thermal  wheel  air  entropy  nitinol  shape  memory  alloy  metal  conditioner  heater  HVAC  mechanical  materials  science  research  technology  cooling  heating 
march 2019 by asteroza
SkyCool Systems: The future of cooling
Rejecting heat through atmospheric IR windows to space from the ground. Potentially cooling to sub-ambient!
atmospheric  IR  window  heat  rejection  cooling  HVAC 
september 2017 by asteroza
Dandelion
Google back geothermal HVAC startup
geothermal  ground  sourced  HVAC  heating  cooling  google 
july 2017 by asteroza
Keen Home - Innovating for the connected home
Cloud controlled air vents, to reduce load on teh HVAC system. Mix it up with something like Nest, and you get some of the benefits of japanese style single room air conditioning, but the efficiency of having a larger central HVAC system that also gets reduced runtime.
cloud  remote  control  home  automation  HVAC  air  vent  close  actuator  house  Delicious 
september 2014 by asteroza
Exhale Fans - World's first truly bladeless ceiling fan
Interesting use of a tesla turbine as a bladeless and mostly silent ceiling fan.
ceiling  ventilation  HVAC  devices  electronics  hardware  silent  quiet  circulation  air  fan  turbine  tesla  bladeless  IndieGoGo  Delicious 
november 2012 by asteroza
daikinaltherma-brochure.pdf (application/pdf Object)
Getting closer to the ideal home energy management system, this using air sourced heat pumps boosted with solar thermal panels, driving a hot water heater as well as in floor heat transfer loops or traditional radiators, or heat exchangers for forced air HVAC. Now boost this with an HRV, integrated solar PV thermal panels providing heat and electricity, as well as an external fuel cell supplying heat and electricity, a cold thermal storage tank (nighttime ice generation) as a pair to the hot water tank, and a home electrical storage battery, and then you have something awesome.
Daikin  Altherma  solar  boost  air  source  heat  pump  water  heater  floor  heating  cooling  HVAC  thermal  storage  HEMS  Delicious 
august 2012 by asteroza
A ‘Magic Box’ For Your Passivhaus | GreenBuildingAdvisor.com
The Magic Box, AKA heavily integrated thermal compnents for homes such that heat/cold can be used/reused effectively, from HVAC to hot water heaters and boilers for in floor heating. Most of the focus here is heat recovery ventilators, which recover heat energy from hot exhaust air to preheat/heat the evaporator coil of a heat pump. Too bad hardly anyone is selling them.
Passivhaus  house  home  integrated  monolithic  hybrid  combined  energy  green  ventilator  recovery  chiller  adsoprtion  management  thermal  heater  water  pump  heat  HEMS  HVAC  HRV  box  magic  magicbox  Delicious 
august 2012 by asteroza
MTECH Laboratories :: Welcome
Working on superconducting inverter/rectifier designs. Potentially useful for superconducting grid applications, and substations for HVDC/HVAC conversion?
research  HVAC  HVDC  grid  devices  electronics  hardware  management  power  design  rectifier  inverter  superconducting  Delicious 
april 2012 by asteroza
Open Compute Project
Facebook opensourced their whole datacenter design, from the building design, to cooling, to floors, to racks, to server chassis. Crazy stuff like PoE powered LED lighting!
facebook  opensource  design  spec  specification  datacenter  server  power  HVAC  cooling  reference  sysadmin  hardware  electronics  devices  facility  infrastructure  PUE  air  side  economizer  LED  PoE  lighting  open  frame  chassis  case  cold  aisle  containment  OpenCompute  Delicious 
april 2011 by asteroza
Solar Cogeneration, Cogen, Power, Hot Water | Cogenra Solar
Basically this is a water cooled combined heat and power CHP concentrating solar PV trough design that recovers PV coolant heat for domestic hot water use. The low cost innovation seems to be the fresnel lens style segmented flat panel parabolic glass mirror array that makes up the trough, since flat mirrors in long planar sheets are cheap. New version also does AC via an adsorption chiller
photovoltaic  thermal  trough  concentrating  heat  cogeneration  trigeneration  cooler  cooling  power  generator  Cogenera  CHP  fresnel  parabolic  chiller  CSP  HVAC  green  solar  adsorption  reflector  combined  AC  PV  hybrid  energy  Delicious 
november 2010 by asteroza
Geothermal Heat Pump Transfer Systems, Closed Loop Water Source Heat Pumps, Lake Loop Heat Pump Systems - Limnion By Heat-Line
A rather smartly designed compact heat exchanger for a lake loop cooler, bypassing the setup needs for a traditional lake loop cooling system and the vast mat of cooling pipes. I would worry about eventual biofouling, but perhaps the convection rate might be enough to deal with that.
Limnion  lake  loop  geothermal  heat  transfer  pump  home  house  building  cooling  HVAC  hardware  system  Delicious 
september 2010 by asteroza
asahi.com(朝日新聞社):Solar-powered air-conditioning technology developed - English
Pimping a natural gas powered, solar assisted steam cycle vapor chiller air conditioner ( I would assume some sort of concentrating solar thermal setup)
solar  assist  assisted  HVAC  AC  cooling  natural  gas  vapor  cycle  japan  green  energy  CSP  concentrating  Delicious 
july 2010 by asteroza
NREL: Distributed Thermal Energy Technologies - Thermally Driven Air Conditioning
More about that interesting liquid desiccant based cooler. The cooling and dehumidifying operation can be easily separated physically and temporally, meaning the desiccant can be regenerated at a later time when low temperature heat is easier to obtain or cheaper to generate (such as night time to offset cooling energy costs)
DEVap  membrane  liquid  desiccant  evaporative  cooler  research  materials  science  technology  cooling  HVAC  dehumidifier  thermal  absorption  green  energy  Delicious 
june 2010 by asteroza
Internet could lower its cooling bills by using hot water
Interesting that they use high temperature coolant, in an effort to cool to ambient temperature rather than forcefully chill the coolant below ambient, as a kind of economizer.
hot  water  coolant  cooling  computer  server  rack  HVAC  hardware  electronics  devices  datacenter  microchannel  heat  sink  thermal  management  IBM  Delicious 
april 2010 by asteroza
Uponor - Uponor Homepage
Aqua-PEX burst resistant flexible plastic tubing. Apparently a suitable alternative to copper pipe in concrete slabs for radiant heating in freezing conditions, as the flexibility can absorb the expansion of water freezing in the pipe should the radiant heat source fail. Well, probably.
Aqua-PEX  flexible  plastic  pipe  tube  plumbing  home  construction  Radiant  heating  cooling  hvac  flooring  architecture  house  design  burst  resistant  Delicious 
august 2009 by asteroza

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