Air-cooled condenser apparatus and method

An air-cooled condenser apparatus for condensing a steam flow from a steam turbine wherein the air-cooled condenser apparatus is erected along a vertical axis Z perpendicular to a floor level including two orthogonal axes X and Y perpendicular to the axis Z, said air-cooled condenser apparatus comprising:

• one condenser module or a series of condenser modules ACCM(i) with i=1 to NMOD and 2≤NMOD, said one condenser module or each condenser module ACCM(i) of said series of condenser modules including:
• c) a series HEXU(j) of delta-type heat exchanger units with j=1 to UN and UN=2 or UN=3, forming a row of UN delta-type heat exchanger units extending along a direction parallel with said axis X, and wherein each delta-type heat exchanger unit of said series HEXU(j) of delta-type heat exchanger units includes:
• a first set of parallel tubes and a second set of parallel tubes that are inclined with respect to said vertical axis Z and are positioned so as to have an opening angle δ between the first set and the second set of parallel tubes, the opening angle δ in a range 45°≤δ≤65°, and wherein the tubes of said first set and second set of parallel tubes have a tube length TL in a range of 1.5 m<TL<2.5 m, and said tubes include fins,
• a top duct extending in a direction parallel to said axis Y and connected to an upper end of each tube of said first set of parallel tubes and connected to an upper end of each tube of said second set of parallel tubes,
• a first steam/condensate manifold extending in a direction parallel to said axis Y and connected to a lower end of each tube of said first set of parallel tubes, and
• a second steam/condensate manifold extending in a direction parallel to said axis Y and connected to a lower end of each tube of said second set of parallel tubes, said first steam/condensate manifold and said second steam/condensate manifold have a length PL that is in a range of 8.0 m<PL<13.7 m, and
• d) a series of fans FAN(k) of at least two fans and at most four fans, wherein the fans of said series of fans FAN(k) are aligned along an axis parallel with the Y axis and wherein each fan of said series of fans is configured to generate an air flow through all delta-type heat exchanger units of said series HEXU(j) of delta-type heat exchanger units, and
• a support structure configured for positioning the delta-type heat exchanger units of said one condenser module or the delta-type heat exchanger units of said series of condenser modules ACCM(i) at a height H1, measured along the Z axis, that is equal to or larger than four meter above said floor level,
• wherein said support structure includes a series of independent frame structures FRS(m) with m=1 to NFR, wherein said series of independent frame structures is configured for supporting a total number NTOT=UN×NMOD of delta-type heat exchanger units, and wherein the number NFR of said independent frame structures is in the range Ceiling(NMOD/3)≤NFR≤NMOD,
• wherein said series of independent frame structures FRS(m) includes a first frame of a first model and a second frame of a second model, the first model configured to support the series HEXU(j) of delta-type heat exchanger units of a first number of condenser modules, and the second model configured to support the series HEXU(j) of delta-type heat exchanger units of a second number of condenser modules, the first number of condenser modules different than the second number of condenser modules.

An air-cooled condenser apparatus for condensing a steam flow from a steam turbine wherein the air-cooled condenser apparatus is erected along a vertical axis Z perpendicular to a floor level including two orthogonal axes X and Y perpendicular to the axis Z, said air-cooled condenser apparatus comprising:

• one condenser module or a series of condenser modules ACCM(i) with i=1 to NMOD and 2≤NMOD, said one condenser module or each condenser module ACCM(i) of said series of condenser modules including:
• e) a series HEXU(j) of delta-type heat exchanger units with j=1 to UN and UN=2 or UN=3, forming a row of UN delta-type heat exchanger units extending along a direction parallel with said axis X, and wherein each delta-type heat exchanger unit of said series HEXU(j) of delta-type heat exchanger units includes:
• a first set of parallel tubes and a second set of parallel tubes that are inclined with respect to said vertical axis Z and are positioned so as to have an opening angle δ between the first set and the second set of parallel tubes, the opening angle δ in a range 45°≤δ≤65°, and wherein the tubes of said first set and second set of parallel tubes have a tube length TL in a range of 1.5 m<TL<2.5 m, and said tubes include fins,
• a top duct extending in a direction parallel to said axis Y and connected to an upper end of each tube of said first set of parallel tubes and connected to an upper end of each tube of said second set of parallel tubes,
• a first steam/condensate manifold extending in a direction parallel to said axis Y and connected to a lower end of each tube of said first set of parallel tubes, and
• a second steam/condensate manifold extending in a direction parallel to said axis Y and connected to a lower end of each tube of said second set of parallel tubes, said first steam/condensate manifold and said second steam/condensate manifold have a length PL that is in a range of 8.0 m<PL<13.7 m, and
• f) a series of fans FAN(k) of at least two fans and at most four fans, wherein the fans of said series of fans FAN(k) are aligned along an axis parallel with the Y axis and wherein each fan of said series of fans is configured to generate an air flow through all delta-type heat exchanger units of said series HEXU(j) of delta-type heat exchanger units, and
• a support structure configured for positioning the delta-type heat exchanger units of said one condenser module or the delta-type heat exchanger units of said series of condenser modules ACCM(i) at a height H1, measured along the Z axis, that is equal to or larger than four meter above said floor level,
• wherein said support structure includes a series of independent frame structures FRS(m) with m=1 to NFR, wherein said series of independent frame structures is configured for supporting a total number NTOT=UN×NMOD of delta-type heat exchanger units, and wherein the number NFR of said independent frame structures is in the range Ceiling(NMOD/3)≤NFR≤NMOD,
• wherein said series of independent frame structures FRS(m) includes a first number of frames of a first model and a second number of frames of a second model, the first model configured to support the series HEXU(j) of delta-type heat exchanger units of a first number of condenser modules, and the second model configured to support the series HEXU(j) of delta-type heat exchanger units of a second number of condenser modules, the first number of condenser modules different than the second number of condenser modules, the first number of frames different than the second number of frames.