X-Junk-Score: 0 [] X-KAS-Score: 0 [] From: "Le Roux Breytenbach breytenbachleroux@gmail.com" Received: from mail-lj1-f170.google.com ([209.85.208.170] verified) by logan.com (CommuniGate Pro SMTP 6.4.0) with ESMTPS id 2516098 for flyrotary@lancaironline.net; Fri, 20 Oct 2023 00:10:14 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.208.170; envelope-from=breytenbachleroux@gmail.com Received: by mail-lj1-f170.google.com with SMTP id 38308e7fff4ca-2c50d1b9f22so5589731fa.0 for ; Thu, 19 Oct 2023 21:10:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697774998; x=1698379798; darn=lancaironline.net; h=to:in-reply-to:references:message-id:date:subject:mime-version:from :content-transfer-encoding:from:to:cc:subject:date:message-id :reply-to; bh=5C3fpCFt5PvLca4MicxI2afftaUSFGQr9YCy8WkCH10=; b=SZtmBuKWtZ4zU4a4bnYmT0gsXOCKifYJ+ORV760gdRyYIOYk57l/hNDk6PNFrZNlYM /ryAInxDzpbWVGK7UOygrbiMuFi1+NMqIzbhmGtooDwheiL1RPs2UROr5+0K4mvv/FEI 9jXaoCY1IrRrunDsO1C/xm0L72vu0WT5GFpRfjKdxie/8inTuruZZLrxjbzviFzVaDNV UEO1JreFvYl7oqU51QZ4u4a6wU8lCpq/sMCRjBYKW/9CIDFF/zhNDRMw0ty69pKLSk4S /xtTnXqpl06jBTLR94ibezvNARCgwTJMKuKuncdvLh962YTXcwNCAvaC/BF5DVM87A1Y vcFg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697774998; x=1698379798; h=to:in-reply-to:references:message-id:date:subject:mime-version:from :content-transfer-encoding:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to; bh=5C3fpCFt5PvLca4MicxI2afftaUSFGQr9YCy8WkCH10=; b=lES4rZoQxoYlNMxMJCw6+sFjJ3dfIDkrkSf2IWcuG8kCxHxu10Xcd62dDks+6ypraf vYL6ng0V8VTUkle9PqwBJrgvKsBeVJcuv6+tQ95LfO4pf7hJkPs4RX96XVGYu+W608ma /kRkIU9mFc7fhI5BAAwrlR7pjk8JeVWhABGzfv5BTFi8jICMp4N9xR9Nezi8N6ncF4fh NnIumOWaDUfHrLRmk4zYX15/2lZCF1ot4KhKMaqIsePfwey1KdvGu6DDb7iqT0c1KkDl Q17jMa11nv4fqXYiCKltoif6hCe5RdlSplpNE7xTD5O7aJzwZUo/mnuv3zXK+xoe41Wh WFuA== X-Gm-Message-State: AOJu0YxAnw35IWBrq7Ndfnr8siQY9c1gr9D144gbzH4LE8hwUVe4A7qW 9SMPcnzUcW2jWV03wZGgwDWePt15js4= X-Google-Smtp-Source: AGHT+IGduNRYhrFuySFUKnWozVFR9zc/0w1B0eA05PB4BO+qWmYPWvKfeMeM2zrsc1hm6r+Rjkly8w== X-Received: by 2002:a2e:a4cd:0:b0:2ba:34d0:fa5f with SMTP id p13-20020a2ea4cd000000b002ba34d0fa5fmr438635ljm.37.1697774995981; Thu, 19 Oct 2023 21:09:55 -0700 (PDT) Return-Path: Received: from smtpclient.apple ([160.226.139.188]) by smtp.gmail.com with ESMTPSA id u1-20020a05600c210100b004068de50c64sm1087449wml.46.2023.10.19.21.09.55 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 19 Oct 2023 21:09:55 -0700 (PDT) Content-Type: multipart/alternative; boundary=Apple-Mail-E8D6AC96-A307-4611-9BEC-FAB7AE69DFC9 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) Subject: Re: [FlyRotary] Re: Potential alternate solutions for oil cooling and oil filter mount Date: Fri, 20 Oct 2023 06:09:43 +0200 Message-Id: References: In-Reply-To: To: Rotary motors in aircraft X-Mailer: iPhone Mail (20G81) --Apple-Mail-E8D6AC96-A307-4611-9BEC-FAB7AE69DFC9 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable a Fundemental factor in the process of heat= transfer is the difference in the temperature of the mediums ( oil / air)The rate of heat transfer in any heat exchanger is proportional to this d= ifference 
In an Oil to Water exchanger this difference can b= e as little as 10 degree fahrenheit 
Water 220 oil 230 <= /div>
In oil to air exchangers these differences is usually  around= 100 degree fahrenheit
These type of oilcooliing can add to the co= mplex problem allready of cooling the rotary engine.( water coolant boiling)=  
Oil to air coolers is in my opinion a more stable system as= oil boils at a temperature well above the normal operating temperatures
Think that conventional oil cooling is a  parallel independent c= ooling system and will continue to function when the liquid ( water) system f= ail for a reason.
As a third of the heat of the rotary is cooled b= y the oil system 
It helps in my opinion if your eggs are not= in one basket and the rotary will get you on the ground if the water system= fails but the oil system is working.

Just my thoug= hts 

Le Roux

Sent from= my iPhone
Le Roux Breytenbach 

On 19 Oct 2023, at 21:37, Charlie England ceengland7@= gmail.com <flyrotary@lancaironline.net> wrote:

=EF=BB=BF
Sorry fo= r the late reply; been a bit distracted the last few days. I really don't kn= ow about the continuous thing, but that particular item was for a US-br= and vehicle, and 'word on the street' about engine testing at major car mfgr= s these days is that it's far more abusive than anything we could likely ach= ieve in a/c. One test (just one of many) that's been mentioned is running fo= r hundreds of hours, alternating between max power and max torque, stopping o= nly for oil changes at the 'book' interval.

Charlie

Of= course, dumping that oil heat load into the water means a significantly big= ger water radiator would be required. 

On Mon, Oct 16, 2023 at 1:39= =E2=80=AFPM Finn Lassen finn.lass= en@verizon.net <flyrot= ary@lancaironline.net> wrote:
How much heat ( % ) of total is normally rejected for a p= iston engine?
You say rated for 280HP. Is that 280HP continuous?

Finn

On 10/15/2023 4:55 PM, Charlie England ceengland7@gmail.com wrote:
> I've been interested in the idea of liquid-liquid oil coolers for a > long time, but haven't been willing to pay the rather high prices for <= br> > 'conventional' solutions. In recent years quite a few cars have
> started using oil/water exchangers, and I've bookmarked several that > look like they have potential in both heat handling and adaptability.&n= bsp;
> This one looks like it might be as easy as any to adapt, and it
> includes a filter mount, to boot. It's used on vehicles with around > 280 HP, so it might be able to handle a 13B/Renesis' heat load (with > larger radiator, of course). Looks like it could mount to an adapter > made from flat aluminum plate with the exception of one port.
>
> Might have potential to eliminate a cooling duct, and get rid of the > topside bump of the filter on the older Renesis blocks.
>
> https://www.amazon.com/dp/B0BY82QT7J
>
> Charlie
>


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