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Detailed Engineering Solutions

Heat and Mass Balance Preparation

We prepare rigorous heat and mass balances for your FEED and detailed engineering

Technical overview

Heat and Mass
Balance Preparation

Heat and mass balances are the quantitative foundation of every process engineering design, and they drive equipment sizing, energy integration, utility demand, and the emission inventory. When a balance is inaccurate or incomplete, the errors propagate through every downstream discipline. Our team prepares rigorous and validated balances in Aspen HYSYS, Aspen Plus, ProMax, and gPROMS across all of your operating cases, with full property method validation and documented uncertainty bounds so the numbers your design rests on are ones you can trust.

Heat and Mass Balance Preparation Overview
Engineering process

Heat and Mass Balance Preparation workflow

Scope & Data Inputs

Define system boundary, operating cases, feed compositions, product specs, and utility availability limits.

Property Method Selection

Select and validate thermodynamic package against experimental, licensor, or literature data for each service fluid.

Steady State Simulation Build

Construct and converge the process simulation model across all design, minimum, and maximum throughput cases.

Energy Targeting & Pinch

Run pinch analysis, optimise heat exchanger network, and generate utility loading summary for all cases.

Sensitivity & Turndown Analysis

Vary key process parameters to map the safe operating window, emission inventory, and utility band.

Deliverable Package

Issue stream tables, utility summary, simulation model files, and supporting environmental inventory data.

Heat and Mass Balance Preparation Scope
Scope of work

Every deliverable from basis to handover

Complete Heat and Mass Balance Preparation scope covering every calculation, drawing, specification, and construction support activity.

Steady state simulation across the design, minimum, maximum, and turndown cases
Property method selection and validation against experimental or licensor data
Heat exchanger network synthesis and pinch analysis
Column, reactor, and separator performance across all operating cases
A utility loading summary covering steam, cooling water, fuel gas, refrigeration, and electricity
Energy targeting that identifies integration opportunities and retrofit options
An emission inventory prepared for permit work and environmental assessment
Sensitivity analysis that defines the safe operating window and the way parameters interact
Engineering outcomes

Outcomes of Heat and Mass Balance Preparation

Operating Envelope and Stream Accuracy
  • Defines the safe operating envelopes for your process
  • Identifies the high energy streams that need hazard analysis
  • Supports relief and vent sizing
  • Hardens the deviation analysis in your HAZOP
Permit and Process Documentation Defence
  • Provides validated data for your permit applications
  • Supports environmental inventory submissions
  • Documents the design basis so it stands up to regulator review
  • Follows recognised simulation practice across the industry
Debottlenecking and DCS Optimisation
  • Identifies energy and utility savings
  • Strengthens how well your operators understand the process
  • Supports DCS configuration and tuning
  • Improves your debottlenecking analysis
Energy and Capital Efficiency
  • Cuts energy and utility consumption
  • Sizes equipment correctly for the true operating cases
  • Improves capital efficiency
  • Supports the economics of retrofit and revamp work
Standards & references

Codes & standards we work to

GPSA Engineering Data BookAPI RP 521Aspen HYSYS Best PracticeProMaxgPROMS ModellingAIChE Design InstituteISO 10628IBR 1950 (Indian Boiler Regulations)IS 2825 / 803 / 4503 (BIS Pressure Vessel / Tank / HX)TEMA (Tubular Exchanger)CEA Regulations 2010 (India)NEC India (National Electrical Code)AspenTech / HYSYS / PRO II ConventionsAPI RP 14ENFPA 2 (Hydrogen)API RP 941 (Hydrogen Service)
When to engage

Triggers that signal the need

The start of a FEEDA detailed engineering kickoffA debottlenecking studyA revamp designA permit applicationAn energy optimisation programme
Industries served

Where Heat and Mass Balance Preparation applies

Oil & Gas, Upstream

Wellheads, separators, gas compression, FPSO topsides, produced water systems.

UpstreamOffshoreFPSO
Refineries & Petrochemicals

Distillation columns, reactors, heat exchangers, storage spheres, LPG handling.

RefiningPetrochemical
LNG & Gas Processing

Cryogenic exchangers, liquefaction trains, BOG compressors, storage and sendout.

LNGCryogenic
Specialty Chemicals

Reactive systems, batch reactors, solvent handling, runaway reaction scenarios.

ReactiveBatch
Power Generation

Boilers, HRSGs, steam headers, hydrogen systems, ammonia SCR units.

PowerHydrogen
Pharma & Food

Sterile vessels, CIP/SIP, pressure fermenters, solvent recovery, spray dryers.

PharmaFood & Bev
What we deliver

Tangible deliverables

  • A heat and mass balance for each operating case
  • Simulation model files
  • Stream summary tables
  • A utility loading summary
  • A pinch analysis report
  • Emission inventory data
Get Started

Ready to start your project?

Speak with our team to scope an engagement tailored to your facility, regulatory context, and lifecycle stage.