1){ $id_category_ped_vessel = 3; } elseif ($ps_code * $volume_int_header <= 200 and $volume_int_header > 1){ $id_category_ped_vessel = 4; } else { $id_category_ped_vessel = 5; } // group I piping if ($ps_code <= 0.5){ $id_category_ped_piping = 1; } elseif ($tube_dn_header <= 25){ $id_category_ped_piping = 2; } elseif ($tube_dn_header <= 100 and $ps_code * $tube_dn_header <= 1000){ $id_category_ped_piping = 3; } elseif ($tube_dn_header <= 100 or ($ps_code * $tube_dn_header <= 3500 and $tube_dn_header <= 350)){ $id_category_ped_piping = 4; } else { $id_category_ped_piping = 5; } // group II vessel } else { if ($ps_code <= 0.5){ $id_category_ped_vessel = 1; } elseif ($ps_code <= 1000 and ($volume_int_header <= 1 or $ps_code * $volume_int_header <= 50)){ $id_category_ped_vessel = 2; } elseif ($ps_code * $volume_int_header <= 200 and $volume_int_header > 1){ $id_category_ped_vessel = 3; } elseif ($ps_code * $volume_int_header <= 1000 and $volume_int_header > 1){ $id_category_ped_vessel = 4; } else { $id_category_ped_vessel = 5; } // group II piping if ($ps_code <= 0.5){ $id_category_ped_piping = 1; } elseif ($tube_dn_header <= 32 or $ps_code * $tube_dn_header <= 1000){ $id_category_ped_piping = 2; } elseif ($tube_dn_header <= 100 or $ps_code * $tube_dn_header <= 3500){ $id_category_ped_piping = 3; } elseif ($tube_dn_header <= 250 or $ps_code * $tube_dn_header <= 5000){ $id_category_ped_piping = 4; } else { $id_category_ped_piping = 5; } } $id_category_ped = max($id_category_ped_vessel, $id_category_ped_piping); // exchanger class calculation (1 = Green , 2 = Yellow, 3 = Orange, 4 = Red, 5 = Nd, 6 = DHV series, 7 = Nd) if ($id_category_ped < 4){ if ($ps_code * $k_test_code <= 43){ $id_exchanger_class = 1; } elseif ($ps_code * $k_test_code <= 57){ $id_exchanger_class = 2; } elseif ($ps_code * $k_test_code <= 65){ $id_exchanger_class = 3; } elseif ($ps_code * $k_test_code <= 86){ $id_exchanger_class = 4; } else { $id_exchanger_class = 5; } } elseif ($id_category_ped == 4){ $id_exchanger_class = 6; } else { $id_exchanger_class = 7; } // design header calculation (1 = L , 2 = T, 3 = TDD, 4 = Nd) if ($id_exchanger_class == 1){ if ($coil_type_code == 'W'){ $id_design_header_in = 1; $id_design_header_out = 1; } elseif ($coil_type_code == 'E'){ $id_design_header_in = 1; $id_design_header_out = 1; } else { $id_design_header_in = 2; $id_design_header_out = 1; } } elseif ($id_exchanger_class == 2){ if ($coil_type_code == 'W'){ $id_design_header_in = 2; $id_design_header_out = 2; } elseif ($coil_type_code == 'E'){ $id_design_header_in = 1; $id_design_header_out = 1; } else { $id_design_header_in = 3; $id_design_header_out = 3; } } elseif ($id_exchanger_class == 3){ if ($coil_type_code == 'W'){ $id_design_header_in = 2; $id_design_header_out = 2; } elseif ($coil_type_code == 'E'){ $id_design_header_in = 3; $id_design_header_out = 3; } else { $id_design_header_in = 3; $id_design_header_out = 3; } } elseif ($id_exchanger_class == 4){ if ($coil_type_code == 'W'){ $id_design_header_in = 2; $id_design_header_out = 2; } elseif ($coil_type_code == 'E'){ $id_design_header_in = 3; $id_design_header_out = 3; } else { $id_design_header_in = 3; $id_design_header_out = 3; } } else { $id_design_header_in = 4; $id_design_header_out = 4; } mysqli_close($conn); // category ped decoding if ($id_category_ped == 1){ $category_ped_code = 'Excluded'; } elseif ($id_category_ped == 2){ $category_ped_code = 'Art. 4.3'; } elseif ($id_category_ped == 3){ $category_ped_code = 'Cat. I'; } elseif ($id_category_ped == 4){ $category_ped_code = 'Cat. II'; } else { $category_ped_code = 'Cat. III'; } // exchanger class decoding if ($id_exchanger_class == 1){ $exchanger_class_code = 'Green'; } elseif ($id_exchanger_class == 2){ $exchanger_class_code = 'Yellow'; } elseif ($id_exchanger_class == 3){ $exchanger_class_code = 'Orange'; } elseif ($id_exchanger_class == 4){ $exchanger_class_code = 'Red'; } elseif ($id_exchanger_class == 5){ $exchanger_class_code = 'Nd'; } elseif ($id_exchanger_class == 6){ $exchanger_class_code = 'DHV series'; } else { $exchanger_class_code = 'Nd'; } // design header decoding (1 = L , 2 = T, 3 = TDD, 4 = Nd) if ($id_design_header_in == 1){ $design_header_in_code = 'L'; } elseif ($id_design_header_in == 2){ $design_header_in_code = 'T'; } elseif ($id_design_header_in == 3){ $design_header_in_code = 'TDD'; } else { $design_header_in_code = 'Nd'; } if ($id_design_header_out == 1){ $design_header_out_code = 'L'; } elseif ($id_design_header_out == 2){ $design_header_out_code = 'T'; } elseif ($id_design_header_out == 3){ $design_header_out_code = 'TDD'; } else { $design_header_out_code = 'Nd'; } $design_header_code = $design_header_in_code."-".$design_header_out_code; // fins pitch check italy $fins_type_code_enter = substr($fins_type_code, 0, 2).substr($fins_type_code, 3, 2).substr($fins_type_code, 6, 2) ; $fins_item_n_it = $results_fins_item_n_it[$fins_type_code_enter]; $fins_pitch_min_it = $results_fins_pitch_min_it[$fins_type_code_enter]; $fins_pitch_max_it = $results_fins_pitch_max_it[$fins_type_code_enter]; } ?>

Coil code

D.SP.MP

SS.MS

TT

RR

LLLL

PP

PP

V

DI

CCC

UUU

WGT

Design data

REFRIGERANT

PS [bar]

TS [°C]

K TEST

HEADER MAX

HEADER LENGTH

Design check

PSmax circ.

PSmax head.

Refr. group

Categ. PED

Coil class

Head. type

Production limits check

Roen Est - The art of creating heat exchangers