Published systems

EVAPCO's 39-4H42 — an AT cooling tower, 796 nominal tons (3501 kW): rated to cool 2397 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb on 76.6 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. Open fill: the water meets the air directly — Braun's enthalpy-basis tower model. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving water exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by EVAPCO. Published as an example; the figures below are solved from this model.

Baltimore Aircoil's PCC-0792-2412N080 — a PCC evaporative condenser rejecting 4811 kW at a 40.6 °C condensing temperature and a 25.6 °C entering wet bulb, on 83.8 m³/s of the maker's own printed air, with a 59.7 kW fan. The heat comes from outside the drawing, because that is what this machine is: heat rejection, and the plant that sends it the heat is the customer's. Given exactly the rejection BAC certify, the model solves the condensing temperature the machine settles at — which is the reading, and the only figure here that is ours rather than theirs. The rating condition is an inference and the listing says so: BAC's sheets never define the condition of their Base Heat Rejection.

EVAPCO's 39-4I36 — an AT cooling tower, 797 nominal tons (3505 kW): rated to cool 2400 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb on 75.5 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. Open fill: the water meets the air directly — Braun's enthalpy-basis tower model. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving water exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by EVAPCO. Published as an example; the figures below are solved from this model.

BAC's PFI-1212N-2D4ES-N1 — a PFi closed-circuit cooler, 125 nominal tons (548 kW): rated to cool 375 USGPM of process fluid from 95 to 85 °F at a 78 °F entering wet bulb on 42.3 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. The process fluid runs inside a coil under the spray — the evaporative wet-coil model, its two conductances split as the range's own coil volumes say. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving process fluid exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by Baltimore Aircoil. Published as an example; the figures below are solved from this model.

EVAPCO's 39-4I42 — an AT cooling tower, 881 nominal tons (3873 kW): rated to cool 2652 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb on 84.0 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. Open fill: the water meets the air directly — Braun's enthalpy-basis tower model. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving water exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by EVAPCO. Published as an example; the figures below are solved from this model.

BAC's XES15E-1212-11FN — a Series 1500 cooling tower, 230 nominal tons (1012 kW): rated to cool 693 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb on 25.3 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. Open fill: the water meets the air directly — Braun's enthalpy-basis tower model. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving water exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by Baltimore Aircoil. Published as an example; the figures below are solved from this model.

EVAPCO's 39-4J36 — an AT cooling tower, 890 nominal tons (3913 kW): rated to cool 2679 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb on 85.8 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. Open fill: the water meets the air directly — Braun's enthalpy-basis tower model. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving water exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by EVAPCO. Published as an example; the figures below are solved from this model.

BAC's XES3E-1020-06G — a Series 3000 cooling tower, 205 nominal tons (903 kW): rated to cool 618 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb on 25.8 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. Open fill: the water meets the air directly — Braun's enthalpy-basis tower model. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving water exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by Baltimore Aircoil. Published as an example; the figures below are solved from this model.

EVAPCO's 39-4J42 — an AT cooling tower, 983 nominal tons (4320 kW): rated to cool 2958 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb on 95.5 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. Open fill: the water meets the air directly — Braun's enthalpy-basis tower model. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving water exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by EVAPCO. Published as an example; the figures below are solved from this model.

The smallest tower BAC publishes: a counterflow, centrifugal-fan, forced-draft unit rated to cool 36 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb. Drawn at the maker's own printed airflow (2.35 m³/s) and that rated water flow, this model reproduces the certified leaving-water temperature at the rated point exactly — the tower's NTU is derived from it. A centrifugal fan is what lets a Series V sit indoors or behind ductwork. Modelled from the manufacturer's published data — not verified by Baltimore Aircoil. Published as an example; the figures below are solved from this model.

EVAPCO's 39-4K36 — an AT cooling tower, 981 nominal tons (4311 kW): rated to cool 2952 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb on 93.9 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. Open fill: the water meets the air directly — Braun's enthalpy-basis tower model. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving water exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by EVAPCO. Published as an example; the figures below are solved from this model.

BAC's VF1-288N-21P — a Series V closed circuit closed-circuit cooler, 225 nominal tons (990 kW): rated to cool 678 USGPM of process fluid from 95 to 85 °F at a 78 °F entering wet bulb on 63.8 m³/s of air, the maker's own printed airflow, and drawn at those flows with a forced-draft fan on the leaving air, where its nameplate cannot be counted twice against a certified point. The process fluid runs inside a coil under the spray — the evaporative wet-coil model, its two conductances split as the range's own coil volumes say. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving process fluid exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by Baltimore Aircoil. Published as an example; the figures below are solved from this model.

EVAPCO's 39-4K42 — an AT cooling tower, 1080 nominal tons (4749 kW): rated to cool 3252 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb on 104.5 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. Open fill: the water meets the air directly — Braun's enthalpy-basis tower model. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving water exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by EVAPCO. Published as an example; the figures below are solved from this model.

Baltimore Aircoil's VCA-779A — a VCA evaporative condenser rejecting 3356 kW at a 40.6 °C condensing temperature and a 25.6 °C entering wet bulb, on 50.9 m³/s of the maker's own printed air, with a 33.6 kW fan. The heat comes from outside the drawing, because that is what this machine is: heat rejection, and the plant that sends it the heat is the customer's. Given exactly the rejection BAC certify, the model solves the condensing temperature the machine settles at — which is the reading, and the only figure here that is ours rather than theirs. The rating condition is an inference and the listing says so: BAC's sheets never define the condition of their Base Heat Rejection.

EVAPCO's 39-4L36 — an AT cooling tower, 1047 nominal tons (4600 kW): rated to cool 3150 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb on 100.6 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. Open fill: the water meets the air directly — Braun's enthalpy-basis tower model. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving water exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by EVAPCO. Published as an example; the figures below are solved from this model.

Baltimore Aircoil's VRC-0810B-1224N-HB — a Vertex VRC evaporative condenser rejecting 4914 kW at a 40.6 °C condensing temperature and a 25.6 °C entering wet bulb, on 67.8 m³/s of the maker's own printed air, with a 38.5 kW fan. The heat comes from outside the drawing, because that is what this machine is: heat rejection, and the plant that sends it the heat is the customer's. Given exactly the rejection BAC certify, the model solves the condensing temperature the machine settles at — which is the reading, and the only figure here that is ours rather than theirs. The rating condition is an inference and the listing says so: BAC's sheets never define the condition of their Base Heat Rejection.

EVAPCO's 39-4L42 — an AT cooling tower, 1170 nominal tons (5144 kW): rated to cool 3522 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb on 111.9 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. Open fill: the water meets the air directly — Braun's enthalpy-basis tower model. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving water exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by EVAPCO. Published as an example; the figures below are solved from this model.

Baltimore Aircoil's PCC-0812-1224N080 — a PCC evaporative condenser rejecting 4932 kW at a 40.6 °C condensing temperature and a 25.6 °C entering wet bulb, on 79.7 m³/s of the maker's own printed air, with a 59.7 kW fan. The heat comes from outside the drawing, because that is what this machine is: heat rejection, and the plant that sends it the heat is the customer's. Given exactly the rejection BAC certify, the model solves the condensing temperature the machine settles at — which is the reading, and the only figure here that is ours rather than theirs. The rating condition is an inference and the listing says so: BAC's sheets never define the condition of their Base Heat Rejection.

EVAPCO's 39-4M36 — an AT cooling tower, 1078 nominal tons (4741 kW): rated to cool 3246 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb on 106.7 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. Open fill: the water meets the air directly — Braun's enthalpy-basis tower model. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving water exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by EVAPCO. Published as an example; the figures below are solved from this model.

BAC's PFI-1212N-2D4ES-O1 — a PFi closed-circuit cooler, 130 nominal tons (570 kW): rated to cool 390 USGPM of process fluid from 95 to 85 °F at a 78 °F entering wet bulb on 44.9 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. The process fluid runs inside a coil under the spray — the evaporative wet-coil model, its two conductances split as the range's own coil volumes say. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving process fluid exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by Baltimore Aircoil. Published as an example; the figures below are solved from this model.

EVAPCO's 39-4M42 — an AT cooling tower, 1235 nominal tons (5429 kW): rated to cool 3717 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb on 118.5 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. Open fill: the water meets the air directly — Braun's enthalpy-basis tower model. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving water exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by EVAPCO. Published as an example; the figures below are solved from this model.

BAC's XES15E-1212-11GC — a Series 1500 cooling tower, 247 nominal tons (1087 kW): rated to cool 744 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb on 27.1 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. Open fill: the water meets the air directly — Braun's enthalpy-basis tower model. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving water exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by Baltimore Aircoil. Published as an example; the figures below are solved from this model.

EVAPCO's 424-2I24 — an AT cooling tower, 1110 nominal tons (4881 kW): rated to cool 3342 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb on 133.8 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. Open fill: the water meets the air directly — Braun's enthalpy-basis tower model. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving water exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by EVAPCO. Published as an example; the figures below are solved from this model.

BAC's XES3E-1020-06H — a Series 3000 cooling tower, 243 nominal tons (1069 kW): rated to cool 732 USGPM of water from 95 to 85 °F at a 78 °F entering wet bulb on 30.2 m³/s of air, the maker's own printed airflow, and drawn at those flows with an induced-draft fan on the leaving air, pulling through the fill. Open fill: the water meets the air directly — Braun's enthalpy-basis tower model. The model derives the machine's NTU from that one certified point, so it reproduces the rated leaving water exactly and predicts nothing else — one point per model is an input, not a validation. Modelled from the manufacturer's published data — not verified by Baltimore Aircoil. Published as an example; the figures below are solved from this model.