One Question per Day 20181211
Thread Content
When turbines operate in winter, air often accumulates on the outlet side of the condenser circulating water. What are the reasons and consequences of this? When a turbine operates in winter, when the unit is under light load and the temperature of the cooling water inlet is low, the amount of water circulating through the condenser is small, resulting in a low flow rate. This causes the temperature of the cooling water within the condenser to rise, and the gases dissolved in the circulating water get separated and accumulate at the highest point of the water chamber at the outlet of the condenser, forming air bubbles. As the amount of accumulated air increases, the air pocket expands, hindering the flow of cooling water and causing the vacuum in the condenser to drop. During low-load operation in winter, the water side of the condenser should be vented regularly.
When a turbine operates in winter, when the unit is under light load and the temperature of the cooling water inlet is low, the amount of water circulating through the condenser is small, resulting in a low flow rate. This causes the temperature of the cooling water within the condenser to rise, and the gases dissolved in the circulating water get separated and accumulate at the highest point of the water chamber at the outlet of the condenser, forming air bubbles. As the amount of accumulated air increases, the air pocket expands, hindering the flow of cooling water and causing the vacuum in the condenser to drop. During low-load operation in winter, the water side of the condenser should be vented regularly.
When a turbine operates in winter, when the unit is under light load and the temperature of the cooling water inlet is low, the amount of water circulating through the condenser is small, resulting in a low flow rate. This causes the temperature of the cooling water within the condenser to rise, and the gases dissolved in the circulating water get separated and accumulate at the highest point of the water chamber at the outlet of the condenser, forming air bubbles. As the amount of accumulated air increases, the air pocket expands, hindering the flow of cooling water and causing the vacuum in the condenser to drop. During low-load operation in winter, the water side of the condenser should be vented regularly.
The increase in the amount of air accumulated causes the air pockets to expand, preventing cooling water from passing through and resulting in a decrease in the vacuum level of the condenser
When a turbine operates in winter, when the unit is under light load and the temperature of the cooling water inlet is low, the amount of water circulating through the condenser is small, resulting in a low flow rate. This causes the temperature of the cooling water within the condenser to rise, and the gases dissolved in the circulating water get separated and accumulate at the highest point of the water chamber at the outlet of the condenser, forming air bubbles. As the amount of accumulated air increases, the air pocket expands, hindering the flow of cooling water and causing the vacuum in the condenser to drop. During low-load operation in winter, the water side of the condenser should be vented regularly.
When a turbine operates in winter, when the unit is under light load and the temperature of the cooling water inlet is low, the amount of water circulating through the condenser is small, resulting in a low flow rate. This causes the temperature of the cooling water within the condenser to rise, and the gases dissolved in the circulating water get separated and accumulate at the highest point of the water chamber at the outlet of the condenser, forming air bubbles. As the amount of accumulated air increases, the air pocket expands, hindering the flow of cooling water and causing the vacuum in the condenser to drop. During low-load operation in winter, the water side of the condenser should be vented regularly.
During winter operation, the turbine exhaust temperature is maintained by restricting the inlet flow rate of the condenser cooling water, which results in an excessively low flow rate of the cooling water. This leads to the formation of an air plug in the upper part of the cooling water outlet pipe, preventing the cooling water from flowing out and causing a sharp drop in vacuum.
When a turbine operates in winter, when the unit is under light load and the temperature of the cooling water inlet is low, the amount of water circulating through the condenser is small, resulting in a low flow rate. This causes the temperature of the cooling water within the condenser to rise, and the gases dissolved in the circulating water get separated and accumulate at the highest point of the water chamber at the outlet of the condenser, forming air bubbles. As the amount of accumulated air increases, the air pocket expands, hindering the flow of cooling water and causing the vacuum in the condenser to drop. During low-load operation in winter, the water side of the condenser should be vented regularly.
When a turbine operates in winter, when the unit is under light load and the temperature of the cooling water inlet is low, the amount of water circulating through the condenser is small, resulting in a low flow rate. This causes the temperature of the cooling water within the condenser to rise, and the gases dissolved in the circulating water get separated and accumulate at the highest point of the water chamber at the outlet of the condenser, forming air bubbles. As the amount of accumulated air increases, the air pocket expands, hindering the flow of cooling water and causing the vacuum in the condenser to drop. During low-load operation in winter, the water side of the condenser should be vented regularly.
When a turbine operates in winter, when the unit is under light load and the temperature of the cooling water inlet is low, the amount of water circulating through the condenser is small, resulting in a low flow rate. This causes the temperature of the cooling water within the condenser to rise, and the gases dissolved in the circulating water get separated and accumulate at the highest point of the water chamber at the outlet of the condenser, forming air bubbles. As the amount of accumulated air increases, the air pocket expands, hindering the flow of cooling water and causing the vacuum in the condenser to drop. During low-load operation in winter, the water side of the condenser should be vented regularly.