Customer heat switch questionnaire

How would you like your heat switch to operate?

Automatically - I want a passive switch

Under user control - I want an active switch

Not sure - I need advice

A passive switch will turn off when the temperature falls below ~10K. An active switch can be turned back on by the user and kept on.

Over what temperature range do you want to use your switch?

From above 4K (hot end) to 4K (cold end)

From 4K (hot end) to below 4K (cold end)

From below 4K (hot end) to below 1K (cold end)

Not sure - I need advice

Other

The design of a heat switch is highly dependent on the temperature extremes of the user application. Our switches typically turn OFF at a temperature of ~10K.

Other temperature range

What is most important for your application?

My priority is a high ON-state

My priority is a low OFF-state

I must have both of these. Please advise.

High ON-state conductance gives rapid cooldown of a hot object. Low OFF-state conductance gives good thermal isolation of a cold object. As a general rule, we cannot achieve BOTH of the above at a reasonable cost.

Can you give us some more information about the masses and materials that you will interface the heat switch to?

And finally - do you have size-space limits or fixing-positioning constraints that we need to work around? Please let us know.

Yes

Maybe - please discuss options with me

We will always recommend a standard heat switch where that is usable for your application.

Please let us have your email address so that we can follow up with you.

What organisation are you from?

Are you a robot?

That's all for now! We are always happy to discuss your requirements with you, by Zoom if that would be useful. Please let us know whether this questionnaire has been helpful.