By establishing a cultivated Ondol(B) with insulated multicolumn type that channel whose thermal efficieney is excellent according to the references and the standard briquette used Ondol(A) with preheated chamber and secondary air pipe, this experimen...
By establishing a cultivated Ondol(B) with insulated multicolumn type that channel whose thermal efficieney is excellent according to the references and the standard briquette used Ondol(A) with preheated chamber and secondary air pipe, this experiment was made; and the following is the result.
1. When the air pipe was opened fully the period till changing briquettes at B was 8 hours, while it was 7 hours at A. But by controlling the air through the secondary air pipe, the period was able to be extended to 15 hours.
2. The mean temperature of the floor and the room at A was high than at B by 2.97℃ and 2.22℃ each.
3. The distribution of the isothermal lines were thicker at A than at B and the highly heated area was distributed widely and the warm air reached even to the corner of the Ondol.
4. When briquettes were changed the ignition was done more easily at A and the fire was hardly extinguished.