[Greenbuilding] commercial kitchen dishwashers

[barbara deane-gillett]

   go for the heat and heat it with solar and drain water heat recovery.
       ______________________________________________________________

     From:  "Julie" <ecofriendlyinduluth at msn.com>
     To:  <greenbuilding at listserv.repp.org>
     Subject:  [Greenbuilding] commercial kitchen dishwashers
     Date:  Wed, 18 Apr 2007 08:32:54 -0500
     >HI all-
     >
     >Can any of you tell me what would be environmentally preferable for a
     >commercial kitchen dishwasher - the one that uses a solution of chlorine
     or
     >the one that uses much higher hot water heat (180 degrees)?
     >
     >Thanks,
     >Julie
     >
     >
     >-----Original Message-----
     >From: greenbuilding-bounces at listserv.repp.org
     >[mailto:greenbuilding-bounces at listserv.repp.org] On Behalf Of Lawrence
     Lile
     >Sent: Wednesday, April 18, 2007 8:01 AM
     >To: Nick Pine; greenbuilding at listserv.repp.org
     >Subject: Re: [Greenbuilding] [BULK] Re: What R-2000 is not...
     >
     >If I am not mistaken, lighting energy was not included in the 36KW
     figure.
     >I remember your earlier analysis of the Honeywell Damper motor, good
     idea.
     >
     >--Lawrence
     >
     >________________________________
     >
     >From: greenbuilding-bounces at listserv.repp.org on behalf of Nick Pine
     >Sent: Tue 4/17/2007 6:27 AM
     >To: greenbuilding at listserv.repp.org
     >Subject: [BULK] Re: [Greenbuilding] What R-2000 is not...
     >
     >
     >
     >Lawrence writes:
     >
     > > 36kw per year / 365 = about 99 watt-hours per day, or about enough
     power
     > > to run a muffin fan
     > >
     > > http://www.blowerwheel.com/fans-cooling-electronics-framed-square.htm
     > >
     > > for a few hours, definitely not enough to achieve minimum ASHRAE
     > > recommended ventilation levels with the windows closed.
     >
     >Given a height difference and an indoor-outdoor temperature difference
     >(which might come from stored solar heat if indoor and outdoor temps
     >are exactly the same), we might ventilate with a foamboard damper with
     >Honeywell's $50 6161B1000 damper motor, which uses 2 watts when
     >it is moving and 0 watts when it is not moving.
     >
     >With an 8' height difference and a 1 ft^2 damper, we can move 15 cfm
     >with a (15/16.6)^2/8 = 0.1 F temp diff, with about 1.5 Btu/h (0.5 watts)
     >of heat power.
     >
     >But most houses naturally leak a lot more air than that. How many meet
     >the Canadian IDEAS standard?
     >
     >And what do we do about light at night? Gas lamps? Do we count
     >fossil fuels in this game?
     >
     >Nick
     >
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