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heating in a ev can be a range draining task, as this energy generally come straight out of your battery!
Electronic drive trains are extremely efficient, as a result there is not much heat generated during the driving process. As a result EVs need alternative heat sources:
 
it is generally regraded that heating your self, rather than the interior is more efficient.
 
theres a variety of heating methods:


* [[wikipedia:Self-regulating_heater|ptc heaters]]
* [[wikipedia:Self-regulating_heater|ptc heaters]]
Line 9: Line 5:
* [[wikipedia:Heat_pump|heat pumps]]
* [[wikipedia:Heat_pump|heat pumps]]
* seat heaters
* seat heaters
The heating process can have a large effect on the range of a EV, as the energy come directly from the battery pack. theres a few ways to maximize the available energy:
* direct heating
** such as heat seaters. Much more efficient to heat the subject, rather than heating the air around the subject.
* heat pumps
** scavenge heat from external sources instead of producing the heat directly


=== ptc heaters ===
[[File:Tesla ptc.jpg|thumb|299x299px|tesla ptc heater]]
[[File:Tesla ptc.jpg|thumb|299x299px|tesla ptc heater]]
are a solid state device which works in how the resistivity of the material increases rapidly with increasing temperature, so they are self regulating. they are designed to be mounted in a HVCA unit in front of the blower fan, in combination, or replacing, the heater core.
=== PTC heaters ===
PTC (Positive temperature coefficient) heaters are solid state devices electrical heater which strives to keep a constant temperature regardless of how the ambient conditions changes. It is the material in the heater itself that regulates the temperature.
 
They are designed to be mounted in a HVCA unit in front of the blower fan, in combination with, or replacing, the original heater core.


heaters come in a variety of operation voltages and controllers. dedicated ev heaters run off HV, others off 12v and home appliance ones are 120vac.
PTC Heaters come in a variety of operational voltages and controllers. Dedicated EV PTC heaters run off HV, others off 12v and home appliance types run off 120vac.


many European model cars have 12v ptc heaters in them. though 12v heaters are going to not produce large amounts of heat (1kw >). dedicated HV ev heaters are 5kw+
Many European model cars utilize 12v ptc heaters for preheating the cabin. 12v heaters do not produce large amounts of heat (2kw>) but are still worthy contenders in combination with other heating methods. Dedicated HV EV PTC heaters produce 5kw+ worth of heat.


=== water heaters ===
=== Water heaters ===
are generally work by heating up water that is flowing threw them, which is directed to the heater core inside the HVCA units. also useful for battery management in cold weather.
Water heaters, like PTC heaters, come in a variety of operational voltages. They are a simple solution, as theres no need to dismantle or install anything into a vehicles stock HVAC unit. They can be found in many EVs and hybrid vehicles.


[[File:Voltptc.jpg|thumb|chevy volt water heater]]
[[File:Voltptc.jpg|thumb|chevy volt water heater]]


=== heatpumps ===
=== Heatpumps ===
are regarded as the most efficient type of heating in a ev. Isn't a electronic heater 100% efficient? yes, but heat pumps don't use the energy for creating heater, rather they use energy to source heat form else where. they become less efficient the colder it is.
Heat pumps are regarded as the most efficient type of heating in a EV. They function by transferring thermal energy from a cooler space to a warmer space using a refrigeration cycle, think of a AC system operating in reverse.
[[File:Leafpump.png|thumb|303x303px|ev heat pump system]]
[[File:Leafpump.png|thumb|303x303px|ev heat pump system]]


=== seat heaters ===
=== Seat heaters ===
seat heaters are a efficient way if providing heat in a ev, cheap aftermarket kits are available.
seat heaters are a efficient way if providing heat in a ev, cheap aftermarket kits are available.


== heaters ==
== Heaters ==
*[[Webasto HVH50|Webasto HVH]] (50/70/100)
*[[Webasto HVH50|Webasto HVH]] (50/70/100)
*chevy volt water  
*chevy volt water  

Revision as of 15:50, 11 October 2021

Electronic drive trains are extremely efficient, as a result there is not much heat generated during the driving process. As a result EVs need alternative heat sources:

The heating process can have a large effect on the range of a EV, as the energy come directly from the battery pack. theres a few ways to maximize the available energy:

  • direct heating
    • such as heat seaters. Much more efficient to heat the subject, rather than heating the air around the subject.
  • heat pumps
    • scavenge heat from external sources instead of producing the heat directly
tesla ptc heater

PTC heaters

PTC (Positive temperature coefficient) heaters are solid state devices electrical heater which strives to keep a constant temperature regardless of how the ambient conditions changes. It is the material in the heater itself that regulates the temperature.

They are designed to be mounted in a HVCA unit in front of the blower fan, in combination with, or replacing, the original heater core.

PTC Heaters come in a variety of operational voltages and controllers. Dedicated EV PTC heaters run off HV, others off 12v and home appliance types run off 120vac.

Many European model cars utilize 12v ptc heaters for preheating the cabin. 12v heaters do not produce large amounts of heat (2kw>) but are still worthy contenders in combination with other heating methods. Dedicated HV EV PTC heaters produce 5kw+ worth of heat.

Water heaters

Water heaters, like PTC heaters, come in a variety of operational voltages. They are a simple solution, as theres no need to dismantle or install anything into a vehicles stock HVAC unit. They can be found in many EVs and hybrid vehicles.

chevy volt water heater

Heatpumps

Heat pumps are regarded as the most efficient type of heating in a EV. They function by transferring thermal energy from a cooler space to a warmer space using a refrigeration cycle, think of a AC system operating in reverse.

ev heat pump system

Seat heaters

seat heaters are a efficient way if providing heat in a ev, cheap aftermarket kits are available.

Heaters

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