Water circulator with temperature control----make money online

hey everyone this is a project that I

just finished this is a

temperature-controlled water circulator

so I've got a lot of things in the shop

that require cooling water to diffusion

pumps magnetron a ruby laser tube and

it's nice to have a supply of cool water

without going outside and connecting up

like the garden hose I mean not only is

that wasteful I don't have very good

control of the temperature so this unit

here is a basically a water pump an

air-conditioner and a heater and the

heater and air conditioner are

controlled by a PID controller so let me

show you how it works the main power

switch here switches on the pump and

also supplies power to the PID

controller and I've got a little visual

flow indicator here so that you know if

there's any water actually going through

the cooling circuit these connectors are

pretty cool they have a valve on both

the jack side and the plug side so if I

disconnect this just a few drops of

water leak out obviously there's no flow

any marks it's not connected and then as

soon as I connect this again it

reestablishes the flow and it's very

easy not to leak water all over the

place so if this is connected to a long

10 foot hose and you disconnect it it

doesn't you know dribble out all over

the place the PID controller is a gyro

therm 21:32 and there's someone on eBay

selling these used with the includes a

platinum resistive temperature device

all for 75 bucks which is a pretty good

deal and I've used these before in other

projects and they work quite well I

added a couple of manual override

switches so that even if the PID

controller is calling for cooling or

heating you can toggle one of these

switches to override it this is handy if

you don't really care about the

temperature accuracy very much you can

turn the heater off and then if the you

know water gets too cold because the air

conditioner was left on if the PID loop

isn't tuned quite right it won't engage

the heater in waste power

there's a shot at the inside the pump

and the thermal block with the heater

and the flow indicator I got from a

hypothermia recovery unit which is

interesting piece of medical surplus

that I picked up for cheap and the idea

was that you pump warm water around a

jacket and that warms you up slowly so

that you don't you know die of

hypothermia but I took that and added to

it this water cooler this is a window

air conditioning unit where I've removed

the fan that actually blows air out into

the room so it still has the fan that

blows hot air out into the outdoors and

I took the unit that that's pretty

supposed to produce cold air for your

room and dunked it into the water in

this cooler here so the idea is when the

air conditioner is running this gets

really cold and cools down the water

that's in the that's in the chiller or

in the cooler there to control the

heater which is about five or six

hundred watts

I used a solid-state relay which is here

and use the output from the PID control

unit kind of normally as they intended

but with that override switch in line

the cooling to control this air

conditioner normally the PID unit has a

relay internally and you can use that

really to switch 110 volt power but the

relays by the unit's only rated for two

amps and I took it apart and as it turns

out the relay is actually rated for six

but even still this air conditioner is

going to draw more than that so I opened

up the PID control unit and basically

removed the relay and connected the

relay coil contacts to the back of the

unit so then I added my own relay and

connected that up to the PID controller

so I could switch you know 20 amps

so the output to indicator is on which

means the PID unit wants to enact

cooling and it has a setpoint

temperature of 50 degrees so if I flip

the switch on the cool button or on the

cool switch the air-conditioner starts

up and it'll take it probably you know

10 or 15 minutes to get down to 50

degrees F temperature cooling water

so as you can see the top of the wooden

case still fits on there and I can shut

the doors and it's really not too loud

it could be slightly quieter but it's

really not so bad to get air flow in for

the air conditioning unit I just cut

away some of the cabinet so there's a

lot of air that goes in the side and

then the warm air comes out the back

it's not ideal but it moves plenty of

air and it has no trouble cooling the

water down ok see you next time byeTop Paid Keyword :  earn cash online, google make money from home, earn money online without investment by clicking ads, free earn money website, online money making jobs, earn money online without investment by typing, online work for money, best online earning sites, make money online with google, online earning websites, money making websites, online earning websites for students, invest online and earn money, best online money making, online money income, view ads and earn money without investment,