Re: [EVDL] EV AC cooling efficiency vs ICE

2020-07-29 Thread Lee Hart via EV
Haudy Kazemi via EV wrote: Bob, I don't think anyone other than yourself can give you an 'OK' to change your conclusion, if doing so pleases you :) That said, I think an estimated range of 4-15x is too high. 15x does seem high. But it is obviously "a lot". I've left my Leaf parked with the

Re: [EVDL] EV AC cooling efficiency vs ICE

2020-07-28 Thread Haudy Kazemi via EV
Bob, I don't think anyone other than yourself can give you an 'OK' to change your conclusion, if doing so pleases you :) That said, I think an estimated range of 4-15x is too high. I don't think it is useful to exaggerate the energy differences as that just gives more fuel (pun not intended) to

Re: [EVDL] EV AC cooling efficiency vs ICE

2020-07-28 Thread Peri Hartman via EV
https://quietcleanseattle.org/ >> -- Original Message -- From: "Robert Bruninga via EV" To: "Electric Vehicle Discussion List" Cc: "Robert Bruninga" Sent: 28-Jul-20 8:54:50 AM Subject: Re: [EVDL] EV AC cooling efficiency vs ICE Id say the Prius is not the

Re: [EVDL] EV AC cooling efficiency vs ICE

2020-07-28 Thread Robert Bruninga via EV
Id say the Prius is not the most common ICE, but a great input! Would you be OK if I changed my conclusion to something like this "The BEV can provide the same cooling with more than ten times less total heat generated by an ICE depending on the vehicle chosen Maybe 4 times less compared to a

Re: [EVDL] EV AC cooling efficiency vs ICE

2020-07-27 Thread Haudy Kazemi via EV
This is very long, so I made it into sections. I hope at least some people read it, or least parts of it, and share feedback. Thanks! --- On the paper: My interpretation of Figure 6 in the Vaghela/Kapadia paper "The Load Calculation of Automobile Air Conditioning System": this shows net values

Re: [EVDL] EV AC cooling efficiency vs ICE - waste heat

2020-07-27 Thread Tom Mandera via EV
On 7/27/20 12:21 PM, Lee Hart via EV wrote: Robert Bruninga via EV wrote: Now the ICE is assumed to be generating power from an ICE and so WHAT is the amount of heat exhausted to the outside to achieve the same 1 kW of cooling? My feeling is that there is no simple answer. It would depend

Re: [EVDL] EV AC cooling efficiency vs ICE

2020-07-27 Thread Lee Hart via EV
Robert Bruninga via EV wrote: A huge advantage of EVs is sitting at an event (or drivein movie) in AC comfort on a hot day without an engine running. Id like to come up with some numbers to describe the total heat generated by an ICE at idle running its AC compared to an EV. Here is a

[EVDL] EV AC cooling efficiency vs ICE

2020-07-27 Thread Robert Bruninga via EV
A huge advantage of EVs is sitting at an event (or drivein movie) in AC comfort on a hot day without an engine running. Id like to come up with some numbers to describe the total heat generated by an ICE at idle running its AC compared to an EV. Here is a technical paper.