What is a thermistor and why is it more popular than thermostats ...

[melly21297]

What is a thermistor and why is it more popular than thermostats for controlling temperature in the greenhouse?
 
  What will be an ideal response?

Question 2

How can salt build-up be prevented in a summer cooling pad?
 
  What will be an ideal response?

[katieost]

Answer to Question 1

A thermistor is a solid-state chip that changes its voltage output
according to the temperature. It is preferred for its superior accuracy and ability to
hold temperature closer to the set point than a thermostat.

Answer to Question 2

Salt build-up can be prevented by bleeding off to waste 1-2 of the
recirculating water applied to the pad. This is replaced by fresh water demanded
by the float valve in the sump tank.

[melly21297]

Thanks for the timely response, appreciate it

[anyusername12131]

TYSM