Key Aspects About Gas Consumption: Difference between revisions

Line 105:

While gas appliances have traditionally been much cheaper to operate than similar powered electrical ones, this has slowly changed. 30 years ago, gas may have been 10 times as cheap as electricity, and almost a decade ago it was around 4 times as cheap. In the last few years gas prices increased and an equivalent gas energy consumption is now around 2-3 times as cheap as electricity.

It is important to note, in this case as well, that no gas heater is 100% efficient, its efficiency varies on flame temperature, combustion air, airflow, maintenance state. In practice, the efficiency reaches around 80% of the rating. Since electrical appliances can easily reach 90% and require less maintenance, it is obvious that gas ones are at an additional dissadvantage.

{| border=1 cellspacing=0 cellpadding=2

Line 114:

Line 113:

|-

|}

It is important to note, in this case as well, that no gas heater is 100% efficient, its efficiency varies on flame temperature, combustion air, airflow, maintenance state. In practice, the efficiency reaches around 80% of the rating. Since electrical appliances can easily reach 90% and require less maintenance, it is obvious that gas ones are at an additional disadvantage.

A central heating system has much lower energy efficiency than it may be assumed just from the gas boiler itself since all the pipework, radiant heater positioning near walls and the overall system state and balance of flows come into play as losses. Note that air heaters also have their losses, first due to conversion efficiency, but mainly due to distance to actual delivery points and other aspects.

@@ Line 105: / Line 105: @@
 While gas appliances have traditionally been much cheaper to operate than similar powered electrical ones, this has slowly changed. 30 years ago, gas may have been 10 times as cheap as electricity, and almost a decade ago it was around 4 times as cheap. In the last few years gas prices increased and an equivalent gas energy consumption is now around 2-3 times as cheap as electricity.
-It is important to note, in this case as well, that no gas heater is 100% efficient, its efficiency varies on flame temperature, combustion air, airflow, maintenance state. In practice, the efficiency reaches around 80% of the rating. Since electrical appliances can easily reach 90% and require less maintenance, it is obvious that gas ones are at an additional dissadvantage.
 {| border=1 cellspacing=0 cellpadding=2
@@ Line 114: / Line 113: @@
 |-
 |}
+It is important to note, in this case as well, that no gas heater is 100% efficient, its efficiency varies on flame temperature, combustion air, airflow, maintenance state. In practice, the efficiency reaches around 80% of the rating. Since electrical appliances can easily reach 90% and require less maintenance, it is obvious that gas ones are at an additional disadvantage.
 A central heating system has much lower energy efficiency than it may be assumed just from the gas boiler itself since all the pipework, radiant heater positioning near walls and the overall system state and balance of flows come into play as losses. Note that air heaters also have their losses, first due to conversion efficiency, but mainly due to distance to actual delivery points and other aspects.