Stump the Chump!

I thought the Right-Hand Drive (RHD) Prius will equip with a mirrored dash too (Power button will be on the left upper dash), but obviously the Prius Design team treats the Power button like a normal ignition key hole, which is always on the right.....thus Power button is also on the right side still.

Though the Shift Stick is on the Left in the RHD Prius....but so are other regular RHD vehicles too.

 

OK, chumps, enough jibber-jabber about LHD and RHD. Interesting, but this is the Stump the Chump! thread.

What and Where? (I'll be lenient.)

 

I prefer the button under the vent, I'm not keen on trying to showcase it in the middle of an expanse of smooth plastic up in the sun like it is in LHD markets.
The ignition key isn't always on the right, and the indicator stalk isn't always on the right.

 

That's not a good guess, Pat.

 

that's the brake light assembly cover on the inside of the hatch. pretty sure it's RH.

 

Yup.

GO!

 

Really Bill?
(I knew the answer. I didn't have time to check which side.)

 

ok, check back this evening for a new picture.

 

ok, where is it and what does it do?

 

AC high- and low-pressure lines going through the fire wall from the engine compartment into the cabin.

 

correct so far.

purpose? i'm gonna be picky.

 

AC high- and low-pressure lines going through the fire wall from the engine compartment into the cabin.

Provides cooled compressed refrigerant on the high-pressure side which expands inside the cabin box, absorbing heat from the air. The low-pressure side returns the refrigerant to the compressor for the cycle to be repeated.

I get confused about which is the evaporator coil and which is the condenser coil. The refrigerant absorbs heat when it expands.

 

i am officially chumped. good answer!

the condenser is up front, the evaporator is behind the firewall.

 

When the compressed refrigerant expands, I suppose that is evaporation, though since it's in a closed system it's not like water evaporating from a wet car and disappearing. Likewise, when the compressor takes the low-pressure gas/vapor and squeezes the refrigerant into a liquid to circulate through the front radiator, I guess that's a form of condensation, though not like water condensing on the side of a glass of ice tea.

I've been thinking my pictures have been too easy, so this one isn't (I hope.)
What and Where? Specifically, the object in the center of the picture.

 

The refrigerant doesn't just expand, it changes state from a liquid to a gas in the evaporator, then after being compressed to high pressure very hot gas the refrigerant again changes state in the condenser where it gives off the heat it absorbed in the evaporator and again becomes a liquid. It is all about the changing state from liquid to gas and back to liquid.
Good answer though Bill.

PS, oops wrote this before I had read Bill's last post.
The refrigerant does condense just like water vapour condenses on a cold glass. It is pressurised and cooled against the tubes of the condenser where, as a liquid it runs down allowing more hot gas to touch the cooler tubes and condense.

After the liquid is released into the evaporator it boils and as it boils travels through the evaporator tubes taking the heat from the aluminium tubes which in turn draw heat from the fins which draw heat from the air.

The filter dryer receiver is a reservoir of liquid and gas, it is here any gas is kept from going through the expansion valve. This is why there are bubbles in the sight glass only when there isn't enough gas in the system or on system start-up.

The high pressure liquid going in through the fire wall is hot and the low pressure gas coming out in the bigger tube is cold.

I hope this makes a little bit of sense.

 

I posed a question on 07-12-2008 at 02:46 PM.

I tried to make it hard, maybe too successfully. The OP's puzzle duration time of 72 hours has elapsed without an answer. ZC1 said:

Since there weren't any real guesses, I don't know if I'm a CHAMP or a CHUMP. In any event, the thread has gone nowhere for the past three days.

What happens next, ZC1?

 

You killed it Bill
What was the answer?

 

haha...

 

That's what I was afraid of.
Pictured is the underside of the floor panel that goes over the battery in the right rear corner of the Gen II Prius. The object in the center back is the post that goes down and sits on the HV battery air vent, furthest forward in correct orientation. Notice that the end is sloped to match the curve of the vent. The post on the left, at the front of the picture, has a kind of black velvet tape over the top; this post sits on the 12V battery.

I didn't mean to kill the thread. I rather like guessing. :Cry: