Design of non-standard shell-and-tube heat exchangers

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I have the technical data for a non-standard shell-and-tube heat exchanger, and I need to carry out an enlarged-scale design for this heat exchanger. I calculated the heat transfer coefficient and pressure drop using the formulas from the textbook on chemical engineering principles, but the values for the heat transfer coefficient and pressure drop could never satisfy both requirements simultaneously. Are the formulas in the textbook on chemical engineering principles not suitable for non-standard equipment? What formulas should be used for non-standard equipment? I also have a \"Handbook of Chemical Process Design\" published by the Chemical Industry Press; the formulas for heat exchanger design in that book seem to apply only to standard equipment. I’m not sure what the values of many parameters are for my hollow heat exchanger, which is quite frustrating. Briefly describe this shell-and-tube heat exchanger: it consists of an inner cylinder and an outer cylinder, with the area between them serving as the heat exchange zone. The heat exchange tubes are arranged radially; cooling water flows through the tube side, while the liquid to be cooled flows through the shell side, which is equipped with baffle plates. The flow directions of the tube side and shell side are perpendicular. Thank you all.