Manifolds Sizing

سایزینگ کلکتور ورودی و خروجی کویل فین-تیوب آبی — راهنمای فنی و دقیق

Technical Guide for Sizing Inlet and Outlet Manifolds of Water-Fin–Tube Coils

General Principles

Primary Objective:To ensure uniform water distribution across all tube circuits, minimize pressure drop, and prevent cavitation and noise. Key Parameters:Total system mass flow rate m˙\dot{m}m˙, number of tube rows NtN_tNt​, internal tube diameter dtd_tdt​, effective coil length LLL, desired velocity in each tube, and allowable total pressure drop in the manifolds.

Fundamental Calculations

1. Determining Total Flow Rate

Use the coil heat load QQQ and water temperature difference ΔT\Delta TΔT: m˙=QcpΔT\dot{m} = \frac{Q}{c_p \Delta T}m˙=cp​ΔTQ​ where cpc_pcp​, the specific...

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