Received: from PCH.mit.edu (18.7.21.50) by mail.efplus.com (192.168.0.8) with Microsoft SMTP Server (TLS) id 8.3.485.1; Mon, 28 Jun 2021 11:06:20 -0700 Received: from PCH.MIT.EDU (localhost.localdomain [127.0.0.1]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 15SHt3sQ009977; Mon, 28 Jun 2021 13:55:50 -0400 Received: from outgoing-exchange-1.mit.edu (OUTGOING-EXCHANGE-1.MIT.EDU [18.9.28.15]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 15SHt2mH009974 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Mon, 28 Jun 2021 13:55:02 -0400 Received: from w92exedge4.exchange.mit.edu (W92EXEDGE4.EXCHANGE.MIT.EDU [18.7.73.16]) by outgoing-exchange-1.mit.edu (8.14.7/8.12.4) with ESMTP id 15SHswTS028807 for ; Mon, 28 Jun 2021 13:55:02 -0400 Received: from w92expo10.exchange.mit.edu (18.7.74.64) by w92exedge4.exchange.mit.edu (18.7.73.16) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Mon, 28 Jun 2021 13:54:02 -0400 Received: from w92exhyb6.exchange.mit.edu (18.7.71.111) by w92expo10.exchange.mit.edu (18.7.74.64) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 28 Jun 2021 13:54:37 -0400 Received: from NAM02-SN1-obe.outbound.protection.outlook.com (104.47.57.48) by w92exhyb6.exchange.mit.edu (18.7.71.111) with Microsoft SMTP Server (TLS) id 15.0.1497.18 via Frontend Transport; Mon, 28 Jun 2021 13:54:37 -0400 Received: from MW3PR05CA0015.namprd05.prod.outlook.com (2603:10b6:303:2b::20) by DM5PR01MB2508.prod.exchangelabs.com (2603:10b6:3:3c::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4264.20; Mon, 28 Jun 2021 17:54:35 +0000 Received: from CO1NAM11FT046.eop-nam11.prod.protection.outlook.com (2603:10b6:303:2b:cafe::cf) by MW3PR05CA0015.outlook.office365.com (2603:10b6:303:2b::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4287.14 via Frontend Transport; Mon, 28 Jun 2021 17:54:35 +0000 Received: from hostedbypacific.net (216.7.65.59) by CO1NAM11FT046.mail.protection.outlook.com (10.13.174.203) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4264.18 via Frontend Transport; Mon, 28 Jun 2021 17:54:34 +0000 Received: from mail-cluster-1.pacificdomains.net (localhost [127.0.0.1]) by hostedbypacific.net (Postfix) with ESMTP id 501C331099E for ; Mon, 28 Jun 2021 10:54:34 -0700 (PDT) Received: from hostedbypacific.net ([127.0.0.1]) by mail-cluster-1.pacificdomains.net (mail-cluster-1.pacificdomains.net [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id 3--DZXG_LTbk for ; Mon, 28 Jun 2021 10:54:34 -0700 (PDT) Received: from [100.64.10.219] (unknown [23.134.144.254]) by hostedbypacific.net (Postfix) with ESMTPSA id D730F31099D for ; Mon, 28 Jun 2021 10:54:33 -0700 (PDT) From: Brooke Clarke To: "piclist@mit.edu" Sender: "piclist-bounces@mit.edu" Date: Mon, 28 Jun 2021 10:55:37 -0700 Subject: Re: [EE] HVAC filter efficiency and energy consumption (Mark Howles) Thread-Topic: [EE] HVAC filter efficiency and energy consumption (Mark Howles) Thread-Index: AddsSEy5zkpK8q2/Q7OjgNtQU5kPaQ== Message-ID: <5ffe1243-8eaa-e704-3827-6a66f637f9b4@pacific.net> References: List-Help: List-Subscribe: , List-Unsubscribe: , In-Reply-To: Reply-To: Microcontroller discussion list - Public. Accept-Language: en-US X-MS-Exchange-Organization-AuthAs: Anonymous X-MS-Exchange-Organization-AuthSource: TS500.efplus4.local X-MS-Has-Attach: X-Auto-Response-Suppress: All X-MS-Exchange-Organization-SenderIdResult: Pass X-MS-Exchange-Organization-PRD: mit.edu X-MS-TNEF-Correlator: received-spf: Pass (protection.outlook.com: domain of pacific.net designates 216.7.65.59 as permitted sender) receiver=protection.outlook.com; client-ip=216.7.65.59; helo=hostedbypacific.net; dkim-signature: v=1; a=rsa-sha256; c=relaxed/simple; d= hostedbypacific.net; h=content-type:content-type:in-reply-to :mime-version:user-agent:date:date:message-id:from:from :references:to:subject:subject; s=dkim; t=1624902874; x= 1627494875; bh=vDrOd5hirRznJvClV5GCaKbVP0odYeC8jCTrJ5JTm0U=; b=Z lD0w79oqrD35cvcH5zXQ7w2kfXZwvlguUe0aMopcTliGiYCuyNNRHy3Ye/WIME6/ LymRpzY8JVWSyN36oOWVBa3/EFHlfayTpEn2TI8LbLYAz0vOLzML+9s25GOs0rT7 LQh2mpOmYmYucCrACfCDRqMihM3kpmb9CEPEuERxLk= authentication-results: spf=pass (sender IP is 216.7.65.59) smtp.mailfrom=pacific.net; mit.edu; dkim=pass (signature was verified) header.d=hostedbypacific.net;mit.edu; dmarc=pass action=none header.from=pacific.net; user-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Firefox/60.0 SeaMonkey/2.53.7 errors-to: piclist-bounces@mit.edu list-id: "Microcontroller discussion list - Public." list-post: x-beenthere: piclist@mit.edu x-mailman-version: 2.1.6 x-virus-scanned: Debian amavisd-new at mail-cluster-1 x-topics: [EE] x-content-filtered-by: Mailman/MimeDel 2.1.6 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 SGkgTWFyazoKCkEgY291cGxlIG9mIHRob3VnaHRzLgpUaGUgcHJlc3N1cmUgbG9zcyBhY3Jvc3Mg YSBuZXcgZmlsdGVyIGlzIGxvd2VyIHRoYW4gYWZ0ZXIgaXQgaGFzIHRyYXBwZWQgc3R1ZmYsIHNv IHRoZSBsb2FkIHdpbGwgZ28gdXAgd2l0aCB0aW1lLgoKV2hlbiBsZWFybmluZyBhYm91dCB3YXRl ciBmbG93IEkgZm91bmQgdGhlIHBpcGUgYmV0d2VlbiB0aGUgbWV0ZXIgYW5kIGhvdXNlIGlzIHJl c3RyaWN0aW5nIHRoZSBmbG93LgpodHRwczovL3ByYzY4LmNvbS9JL0hvbWVGaXJlUHJvdGVjdGlv bi5odG1sI01ldGVyX3RvX0hvdXNlX3N1cHBseV9waXBlCk5vdCBub3RpY2VhYmxlIGZvciBtb3N0 IHRoaW5ncyBpbnNpZGUgYSBob3VzZSBidXQgaXMgYSBiaWcgZGVhbCBpZiB5b3Ugd2FudCB0byBm aWdodCBhIGZpcmUgYW5kIHdhbnQgdGhlIG1vc3QgZmxvdyBhbmQgCnByZXNzdXJlIHlvdSBjYW4g Z2V0LsKgIEknbSBndWVzc2luZyB0aGF0IGR1Y3Qgc2l6aW5nIG1heSBiZSBhIHNpbWlsYXIgc2l0 dWF0aW9uLsKgIE9uZSB3YXkgdG8gY2hlY2sgbWlnaHQgYmUgYnkgbWVhc3VyaW5nIAp0aGUgYWly IHNwZWVkIGF0IHRoZSBvdXRsZXRzL2lubGV0cy7CoCBUaGlzIG11bHRpcGxpZWQgYnkgdGhlIG9w ZW5pbmcgYXJlYSBnaXZlcyB0aGUgdm9sdW1lIGZsb3cgcmF0ZS4KaHR0cHM6Ly9wcmM2OC5jb20v SS9XZWF0aGVyLnNodG1sI1dpbmRfU3BlZWQKCi0tIApIYXZlIEZ1biwKCkJyb29rZSBDbGFya2UK aHR0cHM6Ly93d3cuUFJDNjguY29tCmF4aW9tczoKMS4gVGhlIGV4dGVudCB0byB3aGljaCB5b3Ug Y2FuIGZpeCBvciBpbXByb3ZlIHNvbWV0aGluZyB3aWxsIGJlIGxpbWl0ZWQgYnkgaG93IHdlbGwg eW91IHVuZGVyc3RhbmQgaG93IGl0IHdvcmtzLgoyLiBFdmVyeWJvZHksIHdpdGggbm8gZXhjZXB0 aW9ucywgaG9sZHMgZmFsc2UgYmVsaWVmcy4KCj4gRGF0ZTogTW9uLCAyOCBKdW4gMjAyMSAwNzo1 MToxOCAtMDcwMAo+IEZyb206IE1hcmsgSG93bGVzIDxtZXNoa2E3NDdAZ21haWwuY29tPgo+IFN1 YmplY3Q6IFtFRV0gSFZBQyBmaWx0ZXIgZWZmaWNpZW5jeSBhbmQgZW5lcmd5IGNvbnN1bXB0aW9u Cj4gVG86IHBpY2xpc3RAbWl0LmVkdQo+IE1lc3NhZ2UtSUQ6Cj4gCTxDQUttZzFoNmtyd1ZTenMy UkZtVGVZTj0tUE09NkxUZlJNUXZuUUZ6VEV1ZmlZM0VNWUFAbWFpbC5nbWFpbC5jb20+Cj4gQ29u dGVudC1UeXBlOiB0ZXh0L3BsYWluOyBjaGFyc2V0PSJVVEYtOCIKPgo+IEhlbGxvLAo+Cj4gSSB3 YXMgY29udGVtcGxhdGluZyBjaGFuZ2luZyBteSBBaXIgZmlsdGVycyB0byBNRVJWMTEgYW5kIHdh cyB0b2xkIGJ5IHNvbWUKPiBwZW9wbGUgdGhhdCB0aGV5IGFyZSBiYWQgZm9yIGVuZXJneSB1c2Fn ZSBhbmQgYWlyIGZsb3cuIEkgY2FtZSBhY3Jvc3MgYQo+IHN0dWR5IHRoYXQgbWVhc3VyZWQgYW5k IGNvbXBhcmVkIHRoZSBlZmZlY3RzIG9mIGxvdyBlZmZpY2llbmN5IGFuZCBoaWdoCj4gZWZmaWNp ZW5jeSBmaWx0ZXJzIGFuZCBJIGZvdW5kIHRoZSB0ZWNobmljYWwgZGV0YWlscyBmYXNjaW5hdGlu Zy4gVGhlaXIKPiBjb25jbHVzaW9uIHdhcyB0aGF0IGVmZmVjdHMgYXJlIG5vdCBzaWduaWZpY2Fu dCBpbiByZXNpZGVudGlhbCBzZXR0aW5ncy4KPgo+IERvZXMgYW55b25lIGhhdmUgZXhwZXJpZW5j ZSB3aXRoIHRoaXMsIG9yIGhhdmUgbW9uaXRvcmVkIHRoaXMgYmVmb3JlIG9uCj4gdGhlaXIgb3du Pwo+Cj4gSSB0aG91Z2h0IG9mIGp1c3QgY29ycmVsYXRpbmcgZW5lcmd5IGNvbnN1bXB0aW9uIGlu Y3JlYXNlL2RlY3JlYXNlIGFyb3VuZAo+IHRoZSBpbml0aWFsIGZldyBkYXlzIG9mIGluc3RhbGxp bmcgIHRoZSBmaWx0ZXIsIGF0IHNpbWlsYXIgdGVtcGVyYXR1cmVzLAo+IHRob3VnaCB0aGUgcGFw ZXIgc3VnZ2VzdHMgdGhlcmUgY2FuIGJlIGEgY29tcGxleCBpbnRlcmFjdGlvbiBvZiBtYW55Cj4g dmFyaWFibGVzIGJlZm9yZSBjb21pbmcgdG8gY29uY2x1c2lvbnMuCj4KPiBIZXJlIGlzIGEgbGlu ayB0byB0aGUgU3R1ZHk6Cj4gaHR0cHM6Ly93d3cuY2FlZS51dGV4YXMuZWR1L3Byb2Yvbm92b3Nl bGFjL1B1YmxpY2F0aW9ucy9Ob3Zvc2VsYWNfQVNIUkFFX1RyYW5zYWN0aW9uc18yMDEwLnBkZgo+ Cj4KPiAtLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0KPgoKLS0gCmh0dHA6Ly93d3cucGlj bGlzdC5jb20vdGVjaHJlZi9waWNsaXN0IFBJQy9TWCBGQVEgJiBsaXN0IGFyY2hpdmUKVmlldy9j aGFuZ2UgeW91ciBtZW1iZXJzaGlwIG9wdGlvbnMgYXQKaHR0cDovL21haWxtYW4ubWl0LmVkdS9t YWlsbWFuL2xpc3RpbmZvL3BpY2xpc3QK .