Use our online Log Mean Temperature Difference Calculator: LMTD Formula: LMTD = [ΔT1- ΔT2]/[lnΔT1 / lnΔT2 ] where ΔT1 and ΔT2 as defined below for the LMTD counter-current flow and LMTD parallel flow: LMTD Counter-current flow exchanger LMTD Parallel flow Exchanger We used the equations shown above in our calculator Log Mean Temperature Difference Calculator. Why…
Category: Equipment Sizing
Equipment Sizing.
Equipment sizing, Pump sizing, pump calculator, We provide calculator for design calculations and equipment sizing leading to preparing process documents (PFD, P&ID, Process Datasheets, etc.).
Prandtl Number Calculator
Prandtl Number Calculator Use our online Prandtl Number Calculator: Prandtl Number Equation The Prandtl Number (Pr) called also Prandtl group is a dimensionless number, introduced by the physicist Ludwig Prandtl. The Prandtl Number equation/formula is the ratio of two transport properties, the kinematic viscosity and the thermal diffusivity. The first propritie affect the the velocity…
Online Suction Specific Speed Calculator at Best Efficiency point . Suction Specific Speed at BEP Formulas: Imperial Units: Ns = ( N * (Q)1/2 ) / (NPSH)3/4. where: Ns = specific speed. N = pump speed, rpm. Q = flow, gpm. NPSH = net positive suction head, ft. Values are taken at best efficiency point (BEP). Pump flow is…
Online Pump Specific Speed Calculator at Best Efficiency point . Pump Specific Speed at Best Efficiency Point Formulas: Imperial Units: Ns = ( N * (Q)1/2 ) / (H)3/4. where: Ns = specific speed. N = pump speed, rpm. Q = flow, gpm. H = head, ft. Values are taken at best efficiency point (BEP). Pump flow is taken…
Online Fluid Velocity Calculator. Fluid Velocity Formulas: Imperial Units: V = ( 0.409 * Q ) / d2. where: V = velocity, ft/s. Q = flow, gpm. d = pipe inside diameter, in. SI Units: V = ( 354 * Q ) / d2. where: V = velocity, m/s. Q = flow, m3/h. d = pipe…
Online Pump Temperature Rise calculator. Pump Temperature Rise Formulas: Imperial Units: ΔT = (H * (1 – η ) )/(778 * U* η). where: ΔT = temperature rise, °F. H = total head, ft. η = pump efficiency, decimal. U = fluid specific heat, BTU/(lbm-°F). SI Units: ΔT = (H * (1 – η ) )/(102 * U* η). where:…